120554990 has 32 divisors (see below), whose sum is σ = 230480640. Its totient is φ = 45243904.

The previous prime is 120554969. The next prime is 120554999. The reversal of 120554990 is 99455021.

It is a super-2 number, since 2×120554990² = 29067011227800200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 120554990.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120554999) 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 15 ways as a sum of consecutive naturals, for example, 65219 + ... + 67041.

It is an arithmetic number, because the mean of its divisors is an integer number (7202520).

Almost surely, 2^120554990 is an apocalyptic number.

120554990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

120554990 is a deficient number, since it is larger than the sum of its proper divisors (109925650).

120554990 is a wasteful number, since it uses less digits than its factorization.

120554990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2236.

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 120554990 is about 10979.7536402234. The cubic root of 120554990 is about 494.0016472924.

The spelling of 120554990 in words is "one hundred twenty million, five hundred fifty-four thousand, nine hundred ninety".