426487181 has 4 divisors (see below), whose sum is σ = 440244864. Its totient is φ = 412729500.

The previous prime is 426487169. The next prime is 426487241. The reversal of 426487181 is 181784624.

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 a de Polignac number, because none of the positive numbers 2^k-426487181 is a prime.

It is a super-2 number, since 2×426487181² = 363782631114653522, 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 (426487141) 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, 6878795 + ... + 6878856.

It is an arithmetic number, because the mean of its divisors is an integer number (110061216).

Almost surely, 2^426487181 is an apocalyptic number.

It is an amenable number.

426487181 is a deficient number, since it is larger than the sum of its proper divisors (13757683).

426487181 is a wasteful number, since it uses less digits than its factorization.

426487181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13757682.

The product of its digits is 86016, while the sum is 41.

The square root of 426487181 is about 20651.5660665239. The cubic root of 426487181 is about 752.7232442495.

The spelling of 426487181 in words is "four hundred twenty-six million, four hundred eighty-seven thousand, one hundred eighty-one".