126231165 has 12 divisors (see below), whose sum is σ = 218800764. Its totient is φ = 67323264.

The previous prime is 126231151. The next prime is 126231179. The reversal of 126231165 is 561132621.

It is an interprime number because it is at equal distance from previous prime (126231151) and next prime (126231179).

It can be written as a sum of positive squares in 2 ways, for example, as 53538489 + 72692676 = 7317^2 + 8526^2 .

It is not a de Polignac number, because 126231165 - 2⁷ = 126231037 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1402524 + ... + 1402613.

It is an arithmetic number, because the mean of its divisors is an integer number (18233397).

Almost surely, 2^126231165 is an apocalyptic number.

126231165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

126231165 is a deficient number, since it is larger than the sum of its proper divisors (92569599).

126231165 is a wasteful number, since it uses less digits than its factorization.

126231165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2805148 (or 2805145 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 126231165 is about 11235.2643493600. The cubic root of 126231165 is about 501.6361932363.

Adding to 126231165 its reverse (561132621), we get a palindrome (687363786).

The spelling of 126231165 in words is "one hundred twenty-six million, two hundred thirty-one thousand, one hundred sixty-five".