402042426626 has 4 divisors (see below), whose sum is σ = 603063639942. Its totient is φ = 201021213312.

The previous prime is 402042426613. The next prime is 402042426649. The reversal of 402042426626 is 626624240204.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 276361541401 + 125680885225 = 525701^2 + 354515^2 .

It is a super-2 number, since 2×402042426626² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 402042426626.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100510606655 + ... + 100510606658.

Almost surely, 2^402042426626 is an apocalyptic number.

402042426626 is a deficient number, since it is larger than the sum of its proper divisors (201021213316).

402042426626 is a wasteful number, since it uses less digits than its factorization.

402042426626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201021213315.

The product of its (nonzero) digits is 221184, while the sum is 38.

The spelling of 402042426626 in words is "four hundred two billion, forty-two million, four hundred twenty-six thousand, six hundred twenty-six".