402242720164 has 12 divisors (see below), whose sum is σ = 704221666288. Its totient is φ = 201036529800.

The previous prime is 402242720161. The next prime is 402242720167. The reversal of 402242720164 is 461027242204.

It is an interprime number because it is at equal distance from previous prime (402242720161) and next prime (402242720167).

It is not an unprimeable number, because it can be changed into a prime (402242720161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21196902 + ... + 21215869.

Almost surely, 2^402242720164 is an apocalyptic number.

It is an amenable number.

402242720164 is a deficient number, since it is larger than the sum of its proper divisors (301978946124).

402242720164 is a wasteful number, since it uses less digits than its factorization.

402242720164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42415146 (or 42415144 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 34.

Adding to 402242720164 its reverse (461027242204), we get a palindrome (863269962368).

The spelling of 402242720164 in words is "four hundred two billion, two hundred forty-two million, seven hundred twenty thousand, one hundred sixty-four".