402560101 has 4 divisors (see below), whose sum is σ = 404887212. Its totient is φ = 400232992.

The previous prime is 402560057. The next prime is 402560113. The reversal of 402560101 is 101065204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 147039876 + 255520225 = 12126^2 + 15985^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402560101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402560401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1163296 + ... + 1163641.

It is an arithmetic number, because the mean of its divisors is an integer number (101221803).

Almost surely, 2^402560101 is an apocalyptic number.

It is an amenable number.

402560101 is a deficient number, since it is larger than the sum of its proper divisors (2327111).

402560101 is a wasteful number, since it uses less digits than its factorization.

402560101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2327110.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 402560101 is about 20063.9004433335. The cubic root of 402560101 is about 738.3748735037.

The spelling of 402560101 in words is "four hundred two million, five hundred sixty thousand, one hundred one".