120439871 has 4 divisors (see below), whose sum is σ = 124593000. Its totient is φ = 116286744.

The previous prime is 120439843. The next prime is 120439901. The reversal of 120439871 is 178934021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 178934021 = 7 ⋅25562003.

It is a cyclic number.

It is not a de Polignac number, because 120439871 - 2¹⁰ = 120438847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120439801) 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, 2076521 + ... + 2076578.

It is an arithmetic number, because the mean of its divisors is an integer number (31148250).

Almost surely, 2^120439871 is an apocalyptic number.

120439871 is a deficient number, since it is larger than the sum of its proper divisors (4153129).

120439871 is an equidigital number, since it uses as much as digits as its factorization.

120439871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4153128.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 120439871 is about 10974.5100574012. The cubic root of 120439871 is about 493.8443550703.

The spelling of 120439871 in words is "one hundred twenty million, four hundred thirty-nine thousand, eight hundred seventy-one".