210000402 has 12 divisors (see below), whose sum is σ = 455000910. Its totient is φ = 70000128.

The previous prime is 210000391. The next prime is 210000403. The reversal of 210000402 is 204000012.

It can be written as a sum of positive squares in only one way, i.e., 193182201 + 16818201 = 13899^2 + 4101^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (210000403) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5833327 + ... + 5833362.

Almost surely, 2^210000402 is an apocalyptic number.

210000402 is an abundant number, since it is smaller than the sum of its proper divisors (245000508).

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

210000402 is a wasteful number, since it uses less digits than its factorization.

210000402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11666697 (or 11666694 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 210000402 is about 14491.3906165005. The cubic root of 210000402 is about 594.3925745549.

Adding to 210000402 its reverse (204000012), we get a palindrome (414000414).

The spelling of 210000402 in words is "two hundred ten million, four hundred two", and thus it is an aban number.