402400422042 has 16 divisors (see below), whose sum is σ = 812614445760. Its totient is φ = 132831207072.

The previous prime is 402400421987. The next prime is 402400422097. The reversal of 402400422042 is 240224004204.

It is an interprime number because it is at equal distance from previous prime (402400421987) and next prime (402400422097).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325566067 + ... + 325567302.

It is an arithmetic number, because the mean of its divisors is an integer number (50788402860).

Almost surely, 2^402400422042 is an apocalyptic number.

402400422042 is an abundant number, since it is smaller than the sum of its proper divisors (410214023718).

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

402400422042 is a wasteful number, since it uses less digits than its factorization.

402400422042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651133477.

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

Adding to 402400422042 its reverse (240224004204), we get a palindrome (642624426246).

The spelling of 402400422042 in words is "four hundred two billion, four hundred million, four hundred twenty-two thousand, forty-two".