426668402 has 4 divisors (see below), whose sum is σ = 640002606. Its totient is φ = 213334200.

The previous prime is 426668399. The next prime is 426668413. The reversal of 426668402 is 204866624.

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., 343694521 + 82973881 = 18539^2 + 9109^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106667099 + ... + 106667102.

Almost surely, 2^426668402 is an apocalyptic number.

426668402 is a deficient number, since it is larger than the sum of its proper divisors (213334204).

426668402 is a wasteful number, since it uses less digits than its factorization.

426668402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213334203.

The product of its (nonzero) digits is 110592, while the sum is 38.

The square root of 426668402 is about 20655.9531854621. The cubic root of 426668402 is about 752.8298437354.

The spelling of 426668402 in words is "four hundred twenty-six million, six hundred sixty-eight thousand, four hundred two".