426501506 has 4 divisors (see below), whose sum is σ = 639752262. Its totient is φ = 213250752.

The previous prime is 426501499. The next prime is 426501511. The reversal of 426501506 is 605105624.

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., 423989281 + 2512225 = 20591^2 + 1585^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106625375 + ... + 106625378.

Almost surely, 2^426501506 is an apocalyptic number.

426501506 is a deficient number, since it is larger than the sum of its proper divisors (213250756).

426501506 is a wasteful number, since it uses less digits than its factorization.

426501506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213250755.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 426501506 is about 20651.9128896090. The cubic root of 426501506 is about 752.7316717320.

The spelling of 426501506 in words is "four hundred twenty-six million, five hundred one thousand, five hundred six".