426640295402 has 8 divisors (see below), whose sum is σ = 641360795556. Its totient is φ = 212853363552.

The previous prime is 426640295387. The next prime is 426640295423. The reversal of 426640295402 is 204592046624.

It can be written as a sum of positive squares in 2 ways, for example, as 317204377681 + 109435917721 = 563209^2 + 330811^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233390933 + ... + 233392760.

Almost surely, 2^426640295402 is an apocalyptic number.

426640295402 is a deficient number, since it is larger than the sum of its proper divisors (214720500154).

426640295402 is a wasteful number, since it uses less digits than its factorization.

426640295402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466784152.

The product of its (nonzero) digits is 829440, while the sum is 44.

The spelling of 426640295402 in words is "four hundred twenty-six billion, six hundred forty million, two hundred ninety-five thousand, four hundred two".