426245642 has 4 divisors (see below), whose sum is σ = 639368466. Its totient is φ = 213122820.

The previous prime is 426245609. The next prime is 426245681. The reversal of 426245642 is 246542624.

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., 419799121 + 6446521 = 20489^2 + 2539^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106561409 + ... + 106561412.

Almost surely, 2^426245642 is an apocalyptic number.

426245642 is a deficient number, since it is larger than the sum of its proper divisors (213122824).

426245642 is a wasteful number, since it uses less digits than its factorization.

426245642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213122823.

The product of its digits is 92160, while the sum is 35.

The square root of 426245642 is about 20645.7172798622. The cubic root of 426245642 is about 752.5811169973.

The spelling of 426245642 in words is "four hundred twenty-six million, two hundred forty-five thousand, six hundred forty-two".