426664131 has 16 divisors (see below), whose sum is σ = 590839200. Its totient is φ = 273639168.

The previous prime is 426664127. The next prime is 426664141. The reversal of 426664131 is 131466624.

Added to its reverse (131466624) it gives a triangular number (558130755 = T₃₃₄₁₀).

It is not a de Polignac number, because 426664131 - 2² = 426664127 is a prime.

It is a super-2 number, since 2×426664131² = 364084561363970322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 426664092 and 426664101.

It is not an unprimeable number, because it can be changed into a prime (426664141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11716 + ... + 31473.

It is an arithmetic number, because the mean of its divisors is an integer number (36927450).

Almost surely, 2^426664131 is an apocalyptic number.

426664131 is a deficient number, since it is larger than the sum of its proper divisors (164175069).

426664131 is a wasteful number, since it uses less digits than its factorization.

426664131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43318.

The product of its digits is 20736, while the sum is 33.

The square root of 426664131 is about 20655.8498009644. The cubic root of 426664131 is about 752.8273317558.

Adding to 426664131 its reverse (131466624), we get a triangular number (558130755 = T₃₃₄₁₀).

The spelling of 426664131 in words is "four hundred twenty-six million, six hundred sixty-four thousand, one hundred thirty-one".