120402653 has 12 divisors (see below), whose sum is σ = 148300092. Its totient is φ = 97130880.

The previous prime is 120402643. The next prime is 120402679. The reversal of 120402653 is 356204021.

It can be written as a sum of positive squares in 2 ways, for example, as 108201604 + 12201049 = 10402^2 + 3493^2 .

It is not a de Polignac number, because 120402653 - 2⁶ = 120402589 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 (120402613) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71438 + ... + 73103.

It is an arithmetic number, because the mean of its divisors is an integer number (12358341).

Almost surely, 2^120402653 is an apocalyptic number.

It is an amenable number.

120402653 is a deficient number, since it is larger than the sum of its proper divisors (27897439).

120402653 is a wasteful number, since it uses less digits than its factorization.

120402653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144572 (or 144565 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 120402653 is about 10972.8142698216. The cubic root of 120402653 is about 493.7934810183.

Adding to 120402653 its reverse (356204021), we get a palindrome (476606674).

The spelling of 120402653 in words is "one hundred twenty million, four hundred two thousand, six hundred fifty-three".