123465537 has 12 divisors (see below), whose sum is σ = 192057684. Its totient is φ = 75978720.

The previous prime is 123465533. The next prime is 123465539. The reversal of 123465537 is 735564321.

It can be written as a sum of positive squares in 2 ways, for example, as 70408881 + 53056656 = 8391^2 + 7284^2 .

It is not a de Polignac number, because 123465537 - 2² = 123465533 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123465533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 527514 + ... + 527747.

It is an arithmetic number, because the mean of its divisors is an integer number (16004807).

Almost surely, 2^123465537 is an apocalyptic number.

It is an amenable number.

123465537 is a deficient number, since it is larger than the sum of its proper divisors (68592147).

123465537 is a wasteful number, since it uses less digits than its factorization.

123465537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055280 (or 1055277 counting only the distinct ones).

The product of its digits is 75600, while the sum is 36.

The square root of 123465537 is about 11111.5047135840. The cubic root of 123465537 is about 497.9456199391.

It can be divided in two parts, 123 and 465537, that multiplied together give a triangular number (57261051 = T₁₀₇₀₁).

The spelling of 123465537 in words is "one hundred twenty-three million, four hundred sixty-five thousand, five hundred thirty-seven".