126631465 has 4 divisors (see below), whose sum is σ = 151957764. Its totient is φ = 101305168.

The previous prime is 126631441. The next prime is 126631471. The reversal of 126631465 is 564136621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 564136621 = 449 ⋅1256429.

It can be written as a sum of positive squares in 2 ways, for example, as 31002624 + 95628841 = 5568^2 + 9779^2 .

It is a cyclic number.

It is not a de Polignac number, because 126631465 - 2²³ = 118242857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 126631465.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12663142 + ... + 12663151.

It is an arithmetic number, because the mean of its divisors is an integer number (37989441).

Almost surely, 2^126631465 is an apocalyptic number.

It is an amenable number.

126631465 is a deficient number, since it is larger than the sum of its proper divisors (25326299).

126631465 is an equidigital number, since it uses as much as digits as its factorization.

126631465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25326298.

The product of its digits is 25920, while the sum is 34.

The square root of 126631465 is about 11253.0646936735. The cubic root of 126631465 is about 502.1658909523.

The spelling of 126631465 in words is "one hundred twenty-six million, six hundred thirty-one thousand, four hundred sixty-five".