426240521 has 8 divisors (see below), whose sum is σ = 503929920. Its totient is φ = 352750608.

The previous prime is 426240517. The next prime is 426240523. The reversal of 426240521 is 125042624.

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

It is not a de Polignac number, because 426240521 - 2² = 426240517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426240523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1049651 + ... + 1050056.

It is an arithmetic number, because the mean of its divisors is an integer number (62991240).

Almost surely, 2^426240521 is an apocalyptic number.

It is an amenable number.

426240521 is a deficient number, since it is larger than the sum of its proper divisors (77689399).

426240521 is a wasteful number, since it uses less digits than its factorization.

426240521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2099743.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 426240521 is about 20645.5932586109. The cubic root of 426240521 is about 752.5781030988.

The spelling of 426240521 in words is "four hundred twenty-six million, two hundred forty thousand, five hundred twenty-one".