426242631 has 4 divisors (see below), whose sum is σ = 568323512. Its totient is φ = 284161752.

The previous prime is 426242611. The next prime is 426242633. The reversal of 426242631 is 136242624.

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

It is not a de Polignac number, because 426242631 - 2⁶ = 426242567 is a prime.

It is a super-2 number, since 2×426242631² = 363365560963604322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426242633) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 71040436 + ... + 71040441.

It is an arithmetic number, because the mean of its divisors is an integer number (142080878).

Almost surely, 2^426242631 is an apocalyptic number.

426242631 is a deficient number, since it is larger than the sum of its proper divisors (142080881).

426242631 is a wasteful number, since it uses less digits than its factorization.

426242631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142080880.

The product of its digits is 13824, while the sum is 30.

The square root of 426242631 is about 20645.6443590410. The cubic root of 426242631 is about 752.5793449150.

The spelling of 426242631 in words is "four hundred twenty-six million, two hundred forty-two thousand, six hundred thirty-one".