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142130501 = 2344913763
BaseRepresentation
bin10000111100010…
…11110101000101
3100220102222101122
420132023311011
5242341134001
622034203325
73344042432
oct1036136505
9326388348
10142130501
1173257827
123b723545
13235a4cb6
1414c3ab89
15c727b1b
hex878bd45

142130501 has 8 divisors (see below), whose sum is σ = 148651200. Its totient is φ = 135638272.

The previous prime is 142130467. The next prime is 142130519. The reversal of 142130501 is 105031241.

142130501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142130501 - 214 = 142114117 is a prime.

It is a super-2 number, since 2×1421305012 = 40402158629022002, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142130501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142130551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3446 + ... + 17208.

It is an arithmetic number, because the mean of its divisors is an integer number (18581400).

Almost surely, 2142130501 is an apocalyptic number.

It is an amenable number.

142130501 is a deficient number, since it is larger than the sum of its proper divisors (6520699).

142130501 is a wasteful number, since it uses less digits than its factorization.

142130501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14235.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 142130501 is about 11921.8497306416. The cubic root of 142130501 is about 521.8701166359.

Adding to 142130501 its reverse (105031241), we get a palindrome (247161742).

The spelling of 142130501 in words is "one hundred forty-two million, one hundred thirty thousand, five hundred one".

Divisors: 1 23 449 10327 13763 316549 6179587 142130501