426212161 has 4 divisors (see below), whose sum is σ = 448644400. Its totient is φ = 403779924.

The previous prime is 426212153. The next prime is 426212183. The reversal of 426212161 is 161212624.

It is a happy number.

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 not a de Polignac number, because 426212161 - 2³ = 426212153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426242161) 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, 11216091 + ... + 11216128.

It is an arithmetic number, because the mean of its divisors is an integer number (112161100).

Almost surely, 2^426212161 is an apocalyptic number.

It is an amenable number.

426212161 is a deficient number, since it is larger than the sum of its proper divisors (22432239).

426212161 is a wasteful number, since it uses less digits than its factorization.

426212161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22432238.

The product of its digits is 1152, while the sum is 25.

The square root of 426212161 is about 20644.9064178068. The cubic root of 426212161 is about 752.5614117494.

Adding to 426212161 its reverse (161212624), we get a palindrome (587424785).

The spelling of 426212161 in words is "four hundred twenty-six million, two hundred twelve thousand, one hundred sixty-one".