120123278499 has 32 divisors (see below), whose sum is σ = 185764693504. Its totient is φ = 67624139520.

The previous prime is 120123278437. The next prime is 120123278507. The reversal of 120123278499 is 994872321021.

It is not a de Polignac number, because 120123278499 - 2⁹ = 120123277987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120123278299) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1309269 + ... + 1398009.

It is an arithmetic number, because the mean of its divisors is an integer number (5805146672).

Almost surely, 2^120123278499 is an apocalyptic number.

120123278499 is a deficient number, since it is larger than the sum of its proper divisors (65641415005).

120123278499 is an equidigital number, since it uses as much as digits as its factorization.

120123278499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89707.

The product of its (nonzero) digits is 435456, while the sum is 48.

The spelling of 120123278499 in words is "one hundred twenty billion, one hundred twenty-three million, two hundred seventy-eight thousand, four hundred ninety-nine".