402142256310 has 32 divisors (see below), whose sum is σ = 991226320992. Its totient is φ = 104339612160.

The previous prime is 402142256287. The next prime is 402142256317. The reversal of 402142256310 is 13652241204.

It is a super-2 number, since 2×402142256310² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402142256317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181144051 + ... + 181146270.

It is an arithmetic number, because the mean of its divisors is an integer number (30975822531).

Almost surely, 2^402142256310 is an apocalyptic number.

402142256310 is an abundant number, since it is smaller than the sum of its proper divisors (589084064682).

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

402142256310 is a wasteful number, since it uses less digits than its factorization.

402142256310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362290368.

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 402142256310 its reverse (13652241204), we get a palindrome (415794497514).

The spelling of 402142256310 in words is "four hundred two billion, one hundred forty-two million, two hundred fifty-six thousand, three hundred ten".