426213857 has 4 divisors (see below), whose sum is σ = 428595120. Its totient is φ = 423832596.

The previous prime is 426213811. The next prime is 426213859. The reversal of 426213857 is 758312624.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 426213857 - 2⁶ = 426213793 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 426213857.

It is not an unprimeable number, because it can be changed into a prime (426213859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1190363 + ... + 1190720.

It is an arithmetic number, because the mean of its divisors is an integer number (107148780).

Almost surely, 2^426213857 is an apocalyptic number.

It is an amenable number.

426213857 is a deficient number, since it is larger than the sum of its proper divisors (2381263).

426213857 is a wasteful number, since it uses less digits than its factorization.

426213857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2381262.

The product of its digits is 80640, while the sum is 38.

The square root of 426213857 is about 20644.9474932730. The cubic root of 426213857 is about 752.5624099553.

The spelling of 426213857 in words is "four hundred twenty-six million, two hundred thirteen thousand, eight hundred fifty-seven".