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130121200 = 24521129573
BaseRepresentation
bin1111100000101…
…11110111110000
3100001211211201201
413300113313300
5231302334300
620524540544
73140004046
oct760276760
9301754651
10130121200
11674a4a90
12376b1754
1320c5b9c1
14133d2396
15b65466a
hex7c17df0

130121200 has 60 divisors (see below), whose sum is σ = 341047368. Its totient is φ = 47315200.

The previous prime is 130121191. The next prime is 130121207. The reversal of 130121200 is 2121031.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130121207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10387 + ... + 19186.

Almost surely, 2130121200 is an apocalyptic number.

130121200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130121200 is an abundant number, since it is smaller than the sum of its proper divisors (210926168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

130121200 is a wasteful number, since it uses less digits than its factorization.

130121200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29602 (or 29591 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 130121200 is about 11407.0679843683. The cubic root of 130121200 is about 506.7370823955.

Adding to 130121200 its reverse (2121031), we get a palindrome (132242231).

It can be divided in two parts, 130121 and 200, that added together give a 4-th power (130321 = 194).

The spelling of 130121200 in words is "one hundred thirty million, one hundred twenty-one thousand, two hundred".

Divisors: 1 2 4 5 8 10 11 16 20 22 25 40 44 50 55 80 88 100 110 176 200 220 275 400 440 550 880 1100 2200 4400 29573 59146 118292 147865 236584 295730 325303 473168 591460 650606 739325 1182920 1301212 1478650 1626515 2365840 2602424 2957300 3253030 5204848 5914600 6506060 8132575 11829200 13012120 16265150 26024240 32530300 65060600 130121200