120090042 has 12 divisors (see below), whose sum is σ = 260195130. Its totient is φ = 40030008.

The previous prime is 120090041. The next prime is 120090053. The reversal of 120090042 is 240090021.

It can be written as a sum of positive squares in only one way, i.e., 113230881 + 6859161 = 10641^2 + 2619^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 6671669 = 120090042 / (1 + 2 + 0 + 0 + 9 + 0 + 0 + 4 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 120089997 and 120090024.

It is not an unprimeable number, because it can be changed into a prime (120090041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3335817 + ... + 3335852.

Almost surely, 2^120090042 is an apocalyptic number.

120090042 is an abundant number, since it is smaller than the sum of its proper divisors (140105088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120090042 is a wasteful number, since it uses less digits than its factorization.

120090042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6671677 (or 6671674 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 120090042 is about 10958.5602156488. The cubic root of 120090042 is about 493.3657521712.

The spelling of 120090042 in words is "one hundred twenty million, ninety thousand, forty-two".