123166537 has 8 divisors (see below), whose sum is σ = 132942600. Its totient is φ = 113433600.

The previous prime is 123166517. The next prime is 123166543. The reversal of 123166537 is 735661321.

It can be written as a sum of positive squares in 4 ways, for example, as 1527696 + 121638841 = 1236^2 + 11029^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123166537 - 2⁷ = 123166409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123166517) 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 7 ways as a sum of consecutive naturals, for example, 4714 + ... + 16387.

It is an arithmetic number, because the mean of its divisors is an integer number (16617825).

Almost surely, 2^123166537 is an apocalyptic number.

It is an amenable number.

123166537 is a deficient number, since it is larger than the sum of its proper divisors (9776063).

123166537 is a wasteful number, since it uses less digits than its factorization.

123166537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21563.

The product of its digits is 22680, while the sum is 34.

The square root of 123166537 is about 11098.0420345212. The cubic root of 123166537 is about 497.5433320000.

The spelling of 123166537 in words is "one hundred twenty-three million, one hundred sixty-six thousand, five hundred thirty-seven".