426878161 has 4 divisors (see below), whose sum is σ = 426962032. Its totient is φ = 426794292.

The previous prime is 426878147. The next prime is 426878167. The reversal of 426878161 is 161878624.

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-426878161 is a prime.

It is a super-3 number, since 3×426878161³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426878167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33771 + ... + 44656.

It is an arithmetic number, because the mean of its divisors is an integer number (106740508).

Almost surely, 2^426878161 is an apocalyptic number.

It is an amenable number.

426878161 is a deficient number, since it is larger than the sum of its proper divisors (83871).

426878161 is an equidigital number, since it uses as much as digits as its factorization.

426878161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83870.

The product of its digits is 129024, while the sum is 43.

The square root of 426878161 is about 20661.0300082063. The cubic root of 426878161 is about 752.9531924248.

The spelling of 426878161 in words is "four hundred twenty-six million, eight hundred seventy-eight thousand, one hundred sixty-one".