120021431 has 8 divisors (see below), whose sum is σ = 121631328. Its totient is φ = 118420000.

The previous prime is 120021427. The next prime is 120021439. The reversal of 120021431 is 134120021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120021431 - 2² = 120021427 is a prime.

It is a super-2 number, since 2×120021431² = 28810287798575522, 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 (120021439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29501 + ... + 33321.

It is an arithmetic number, because the mean of its divisors is an integer number (15203916).

Almost surely, 2^120021431 is an apocalyptic number.

120021431 is a deficient number, since it is larger than the sum of its proper divisors (1609897).

120021431 is a wasteful number, since it uses less digits than its factorization.

120021431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4233.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 120021431 is about 10955.4292932774. The cubic root of 120021431 is about 493.2717761133.

Adding to 120021431 its reverse (134120021), we get a palindrome (254141452).

The spelling of 120021431 in words is "one hundred twenty million, twenty-one thousand, four hundred thirty-one".