402342210 has 24 divisors (see below), whose sum is σ = 1046089980. Its totient is φ = 107291232.

The previous prime is 402342163. The next prime is 402342229. The reversal of 402342210 is 12243204.

It can be written as a sum of positive squares in 2 ways, for example, as 336098889 + 66243321 = 18333^2 + 8139^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2235145 + ... + 2235324.

Almost surely, 2^402342210 is an apocalyptic number.

402342210 is an abundant number, since it is smaller than the sum of its proper divisors (643747770).

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

402342210 is a wasteful number, since it uses less digits than its factorization.

402342210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4470482 (or 4470479 counting only the distinct ones).

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

The square root of 402342210 is about 20058.4697821145. The cubic root of 402342210 is about 738.2416310595.

Adding to 402342210 its reverse (12243204), we get a palindrome (414585414).

The spelling of 402342210 in words is "four hundred two million, three hundred forty-two thousand, two hundred ten".