402404020242 has 32 divisors (see below), whose sum is σ = 951497193600. Its totient is φ = 111008005248.

The previous prime is 402404020219. The next prime is 402404020253. The reversal of 402404020242 is 242020404204.

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, 165189267 + ... + 165191702.

It is an arithmetic number, because the mean of its divisors is an integer number (29734287300).

Almost surely, 2^402404020242 is an apocalyptic number.

402404020242 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

402404020242 is an abundant number, since it is smaller than the sum of its proper divisors (549093173358).

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

402404020242 is a wasteful number, since it uses less digits than its factorization.

402404020242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330381010.

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 402404020242 its reverse (242020404204), we get a palindrome (644424424446).

The spelling of 402404020242 in words is "four hundred two billion, four hundred four million, twenty thousand, two hundred forty-two".