123090051 has 16 divisors (see below), whose sum is σ = 189046784. Its totient is φ = 69781824.

The previous prime is 123090029. The next prime is 123090061. The reversal of 123090051 is 150090321.

It is not a de Polignac number, because 123090051 - 2⁶ = 123089987 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123090061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20410 + ... + 25743.

It is an arithmetic number, because the mean of its divisors is an integer number (11815424).

Almost surely, 2^123090051 is an apocalyptic number.

123090051 is a deficient number, since it is larger than the sum of its proper divisors (65956733).

123090051 is a wasteful number, since it uses less digits than its factorization.

123090051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46290.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 123090051 is about 11094.5955762254. The cubic root of 123090051 is about 497.4403197688.

Adding to 123090051 its product of nonzero digits (270), we get a palindrome (123090321).

The spelling of 123090051 in words is "one hundred twenty-three million, ninety thousand, fifty-one".