426241521 has 20 divisors (see below), whose sum is σ = 640088064. Its totient is φ = 282663000.

The previous prime is 426241511. The next prime is 426241523. The reversal of 426241521 is 125142624.

426241521 is a `hidden beast` number, since 4 + 2 + 624 + 15 + 21 = 666.

It is not a de Polignac number, because 426241521 - 2⁵ = 426241489 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (426241523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1696 + ... + 29246.

Almost surely, 2^426241521 is an apocalyptic number.

It is an amenable number.

426241521 is a deficient number, since it is larger than the sum of its proper divisors (213846543).

426241521 is a wasteful number, since it uses less digits than its factorization.

426241521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27754 (or 27745 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 426241521 is about 20645.6174768400. The cubic root of 426241521 is about 752.5786916378.

The spelling of 426241521 in words is "four hundred twenty-six million, two hundred forty-one thousand, five hundred twenty-one".