120747557 has 4 divisors (see below), whose sum is σ = 137997216. Its totient is φ = 103497900.

The previous prime is 120747551. The next prime is 120747577. The reversal of 120747557 is 755747021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 755747021 = 19 ⋅39776159.

It is a cyclic number.

It is not a de Polignac number, because 120747557 - 2¹⁴ = 120731173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120747557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120747551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8624819 + ... + 8624832.

It is an arithmetic number, because the mean of its divisors is an integer number (34499304).

Almost surely, 2^120747557 is an apocalyptic number.

It is an amenable number.

120747557 is a deficient number, since it is larger than the sum of its proper divisors (17249659).

120747557 is an equidigital number, since it uses as much as digits as its factorization.

120747557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17249658.

The product of its (nonzero) digits is 68600, while the sum is 38.

The square root of 120747557 is about 10988.5193270067. The cubic root of 120747557 is about 494.2645364779.

The spelling of 120747557 in words is "one hundred twenty million, seven hundred forty-seven thousand, five hundred fifty-seven".