72123092 has 12 divisors (see below), whose sum is σ = 126768180. Its totient is φ = 35903616.

The previous prime is 72123091. The next prime is 72123097. The reversal of 72123092 is 29032127.

72123092 is nontrivially palindromic in base 8.

It can be written as a sum of positive squares in 2 ways, for example, as 36529936 + 35593156 = 6044^2 + 5966^2 .

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72123091) 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, 38453 + ... + 40284.

It is an arithmetic number, because the mean of its divisors is an integer number (10564015).

Almost surely, 2^72123092 is an apocalyptic number.

It is an amenable number.

72123092 is a deficient number, since it is larger than the sum of its proper divisors (54645088).

72123092 is a wasteful number, since it uses less digits than its factorization.

72123092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78970 (or 78968 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 72123092 is about 8492.5315424790. The cubic root of 72123092 is about 416.2537052639.

The spelling of 72123092 in words is "seventy-two million, one hundred twenty-three thousand, ninety-two".