402154242 has 32 divisors (see below), whose sum is σ = 919959552. Its totient is φ = 114807504.

The previous prime is 402154237. The next prime is 402154271. The reversal of 402154242 is 242451204.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60823 + ... + 67109.

It is an arithmetic number, because the mean of its divisors is an integer number (28748736).

Almost surely, 2^402154242 is an apocalyptic number.

402154242 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

402154242 is an abundant number, since it is smaller than the sum of its proper divisors (517805310).

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

402154242 is a wasteful number, since it uses less digits than its factorization.

402154242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7822.

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 402154242 is about 20053.7837327523. The cubic root of 402154242 is about 738.1266481628.

The spelling of 402154242 in words is "four hundred two million, one hundred fifty-four thousand, two hundred forty-two".