402036420 has 24 divisors (see below), whose sum is σ = 1125702144. Its totient is φ = 107209696.

The previous prime is 402036391. The next prime is 402036431. The reversal of 402036420 is 24630204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3350244 + ... + 3350363.

It is an arithmetic number, because the mean of its divisors is an integer number (46904256).

Almost surely, 2^402036420 is an apocalyptic number.

It is an amenable number.

402036420 is an abundant number, since it is smaller than the sum of its proper divisors (723665724).

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

402036420 is a wasteful number, since it uses less digits than its factorization.

402036420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6700619 (or 6700617 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 402036420 is about 20050.8458674441. The cubic root of 402036420 is about 738.0545563769.

Adding to 402036420 its reverse (24630204), we get a palindrome (426666624).

The spelling of 402036420 in words is "four hundred two million, thirty-six thousand, four hundred twenty".