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2120430402 = 232117801689
BaseRepresentation
bin111111001100011…
…0011001101000010
312110202222000200100
41332120303031002
513320312233102
6550224103230
7103355234556
oct17630631502
95422860610
102120430402
11998a22822
124b2164b16
1327a3c215c
14161887866
15c6250a1c
hex7e633342

2120430402 has 12 divisors (see below), whose sum is σ = 4594265910. Its totient is φ = 706810128.

The previous prime is 2120430397. The next prime is 2120430437. The reversal of 2120430402 is 2040340212.

It can be written as a sum of positive squares in only one way, i.e., 1710732321 + 409698081 = 41361^2 + 20241^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 117801689 = 2120430402 / (2 + 1 + 2 + 0 + 4 + 3 + 0 + 4 + 0 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 58900827 + ... + 58900862.

Almost surely, 22120430402 is an apocalyptic number.

2120430402 is an abundant number, since it is smaller than the sum of its proper divisors (2473835508).

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

2120430402 is a wasteful number, since it uses less digits than its factorization.

2120430402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117801697 (or 117801694 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 2120430402 is about 46048.1313627383. The cubic root of 2120430402 is about 1284.7185870555.

Adding to 2120430402 its reverse (2040340212), we get a palindrome (4160770614).

The spelling of 2120430402 in words is "two billion, one hundred twenty million, four hundred thirty thousand, four hundred two".

Divisors: 1 2 3 6 9 18 117801689 235603378 353405067 706810134 1060215201 2120430402