120406557 has 8 divisors (see below), whose sum is σ = 162803520. Its totient is φ = 79140320.

The previous prime is 120406519. The next prime is 120406567. The reversal of 120406557 is 755604021.

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 120406557 - 2¹⁰ = 120405533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120406567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282432 + ... + 282857.

It is an arithmetic number, because the mean of its divisors is an integer number (20350440).

Almost surely, 2^120406557 is an apocalyptic number.

It is an amenable number.

120406557 is a deficient number, since it is larger than the sum of its proper divisors (42396963).

120406557 is an equidigital number, since it uses as much as digits as its factorization.

120406557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565363.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 120406557 is about 10972.9921625781. The cubic root of 120406557 is about 493.7988179686.

The spelling of 120406557 in words is "one hundred twenty million, four hundred six thousand, five hundred fifty-seven".