402942810 has 32 divisors (see below), whose sum is σ = 969615360. Its totient is φ = 107167808.

The previous prime is 402942803. The next prime is 402942817. The reversal of 402942810 is 18249204.

It is an interprime number because it is at equal distance from previous prime (402942803) and next prime (402942817).

It is a super-2 number, since 2×402942810² = 324725816261392200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (402942817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6045 + ... + 29024.

It is an arithmetic number, because the mean of its divisors is an integer number (30300480).

Almost surely, 2^402942810 is an apocalyptic number.

402942810 is an abundant number, since it is smaller than the sum of its proper divisors (566672550).

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

402942810 is a wasteful number, since it uses less digits than its factorization.

402942810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35462.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 402942810 is about 20073.4354309371. The cubic root of 402942810 is about 738.6087874018.

The spelling of 402942810 in words is "four hundred two million, nine hundred forty-two thousand, eight hundred ten".