120318557 has 4 divisors (see below), whose sum is σ = 120378780. Its totient is φ = 120258336.

The previous prime is 120318553. The next prime is 120318563. The reversal of 120318557 is 755813021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 755813021 = 43 ⋅17577047.

It can be written as a sum of positive squares in 2 ways, for example, as 5635876 + 114682681 = 2374^2 + 10709^2 .

It is a cyclic number.

It is not a de Polignac number, because 120318557 - 2² = 120318553 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 (120318553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27008 + ... + 31145.

It is an arithmetic number, because the mean of its divisors is an integer number (30094695).

Almost surely, 2^120318557 is an apocalyptic number.

It is an amenable number.

120318557 is a deficient number, since it is larger than the sum of its proper divisors (60223).

120318557 is an equidigital number, since it uses as much as digits as its factorization.

120318557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60222.

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 120318557 is about 10968.9815844499. The cubic root of 120318557 is about 493.6784898413.

The spelling of 120318557 in words is "one hundred twenty million, three hundred eighteen thousand, five hundred fifty-seven".