120042031 has 4 divisors (see below), whose sum is σ = 120218472. Its totient is φ = 119865592.

The previous prime is 120042017. The next prime is 120042079. The reversal of 120042031 is 130240021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 130240021 = 31 ⋅4201291.

It is a cyclic number.

It is not a de Polignac number, because 120042031 - 2⁷ = 120041903 is a prime.

It is a super-2 number, since 2×120042031² = 28820178413209922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120042011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87196 + ... + 88561.

It is an arithmetic number, because the mean of its divisors is an integer number (30054618).

Almost surely, 2^120042031 is an apocalyptic number.

120042031 is a deficient number, since it is larger than the sum of its proper divisors (176441).

120042031 is an equidigital number, since it uses as much as digits as its factorization.

120042031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176440.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 120042031 is about 10956.3694260462. The cubic root of 120042031 is about 493.2999955660.

Adding to 120042031 its reverse (130240021), we get a palindrome (250282052).

The spelling of 120042031 in words is "one hundred twenty million, forty-two thousand, thirty-one".