120555669 has 8 divisors (see below), whose sum is σ = 173105632. Its totient is φ = 74188080.

The previous prime is 120555661. The next prime is 120555691. The reversal of 120555669 is 966555021.

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

It is not a de Polignac number, because 120555669 - 2³ = 120555661 is a prime.

It is a super-2 number, since 2×120555669² = 29067338656075122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 3091171 = 120555669 / (1 + 2 + 0 + 5 + 5 + 5 + 6 + 6 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120555661) 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, 1545547 + ... + 1545624.

It is an arithmetic number, because the mean of its divisors is an integer number (21638204).

Almost surely, 2^120555669 is an apocalyptic number.

It is an amenable number.

120555669 is a deficient number, since it is larger than the sum of its proper divisors (52549963).

120555669 is a wasteful number, since it uses less digits than its factorization.

120555669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3091187.

The product of its (nonzero) digits is 81000, while the sum is 39.

The square root of 120555669 is about 10979.7845607280. The cubic root of 120555669 is about 494.0025747433.

The spelling of 120555669 in words is "one hundred twenty million, five hundred fifty-five thousand, six hundred sixty-nine".