120823557 has 8 divisors (see below), whose sum is σ = 162576480. Its totient is φ = 79809840.

The previous prime is 120823553. The next prime is 120823559. The reversal of 120823557 is 755328021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 120823557 - 2² = 120823553 is a prime.

It is a super-2 number, since 2×120823557² = 29196663852264498, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120823553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184419 + ... + 185072.

It is an arithmetic number, because the mean of its divisors is an integer number (20322060).

Almost surely, 2^120823557 is an apocalyptic number.

It is an amenable number.

120823557 is a deficient number, since it is larger than the sum of its proper divisors (41752923).

120823557 is a wasteful number, since it uses less digits than its factorization.

120823557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369603.

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 120823557 is about 10991.9769377487. The cubic root of 120823557 is about 494.3682134587.

The spelling of 120823557 in words is "one hundred twenty million, eight hundred twenty-three thousand, five hundred fifty-seven".