120408123 has 16 divisors (see below), whose sum is σ = 180790272. Its totient is φ = 70620000.

The previous prime is 120408121. The next prime is 120408139. The reversal of 120408123 is 321804021.

It is not a de Polignac number, because 120408123 - 2¹ = 120408121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120408123.

It is not an unprimeable number, because it can be changed into a prime (120408121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57828 + ... + 59873.

It is an arithmetic number, because the mean of its divisors is an integer number (11299392).

Almost surely, 2^120408123 is an apocalyptic number.

120408123 is a deficient number, since it is larger than the sum of its proper divisors (60382149).

120408123 is a wasteful number, since it uses less digits than its factorization.

120408123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117746.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 120408123 is about 10973.0635193641. The cubic root of 120408123 is about 493.8009587313.

The spelling of 120408123 in words is "one hundred twenty million, four hundred eight thousand, one hundred twenty-three".