120021142 has 16 divisors (see below), whose sum is σ = 182879712. Its totient is φ = 59068800.

The previous prime is 120021137. The next prime is 120021191. The reversal of 120021142 is 241120021.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 32368 + ... + 35884.

It is an arithmetic number, because the mean of its divisors is an integer number (11429982).

Almost surely, 2^120021142 is an apocalyptic number.

120021142 is a deficient number, since it is larger than the sum of its proper divisors (62858570).

120021142 is a wasteful number, since it uses less digits than its factorization.

120021142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3783.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 120021142 is about 10955.4161034623. The cubic root of 120021142 is about 493.2713801960.

Adding to 120021142 its reverse (241120021), we get a palindrome (361141163).

The spelling of 120021142 in words is "one hundred twenty million, twenty-one thousand, one hundred forty-two".