120420724 has 12 divisors (see below), whose sum is σ = 223132644. Its totient is φ = 56668544.

The previous prime is 120420697. The next prime is 120420733. The reversal of 120420724 is 427024021.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 58798224 + 61622500 = 7668^2 + 7850^2 .

It is a junction number, because it is equal to n+sod(n) for n = 120420695 and 120420704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 885379 + ... + 885514.

It is an arithmetic number, because the mean of its divisors is an integer number (18594387).

Almost surely, 2^120420724 is an apocalyptic number.

It is an amenable number.

120420724 is a deficient number, since it is larger than the sum of its proper divisors (102711920).

120420724 is a wasteful number, since it uses less digits than its factorization.

120420724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1770914 (or 1770912 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 120420724 is about 10973.6376831022. The cubic root of 120420724 is about 493.8181839502.

Adding to 120420724 its reverse (427024021), we get a palindrome (547444745).

The spelling of 120420724 in words is "one hundred twenty million, four hundred twenty thousand, seven hundred twenty-four".