120402557 has 16 divisors (see below), whose sum is σ = 133728000. Its totient is φ = 107490240.

The previous prime is 120402553. The next prime is 120402559. The reversal of 120402557 is 755204021.

It is not a de Polignac number, because 120402557 - 2² = 120402553 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 (120402553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 303083 + ... + 303479.

It is an arithmetic number, because the mean of its divisors is an integer number (8358000).

Almost surely, 2^120402557 is an apocalyptic number.

It is an amenable number.

120402557 is a deficient number, since it is larger than the sum of its proper divisors (13325443).

120402557 is a wasteful number, since it uses less digits than its factorization.

120402557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 120402557 is about 10972.8098953732. The cubic root of 120402557 is about 493.7933497804.

Adding to 120402557 its reverse (755204021), we get a palindrome (875606578).

The spelling of 120402557 in words is "one hundred twenty million, four hundred two thousand, five hundred fifty-seven".