402222410 has 32 divisors (see below), whose sum is σ = 741394512. Its totient is φ = 157063680.

The previous prime is 402222409. The next prime is 402222433. The reversal of 402222410 is 14222204.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 123232201 + 278990209 = 11101^2 + 16703^2 .

It is a Curzon 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, 81164 + ... + 85976.

Almost surely, 2^402222410 is an apocalyptic number.

402222410 is a deficient number, since it is larger than the sum of its proper divisors (339172102).

402222410 is a wasteful number, since it uses less digits than its factorization.

402222410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5018.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 402222410 is about 20055.4832901130. The cubic root of 402222410 is about 738.1683517095.

Adding to 402222410 its reverse (14222204), we get a palindrome (416444614).

The spelling of 402222410 in words is "four hundred two million, two hundred twenty-two thousand, four hundred ten".