120939890 has 8 divisors (see below), whose sum is σ = 217691820. Its totient is φ = 48375952.

The previous prime is 120939877. The next prime is 120939913. The reversal of 120939890 is 98939021.

It can be written as a sum of positive squares in 2 ways, for example, as 109977169 + 10962721 = 10487^2 + 3311^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6046985 + ... + 6047004.

Almost surely, 2^120939890 is an apocalyptic number.

120939890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

120939890 is a deficient number, since it is larger than the sum of its proper divisors (96751930).

120939890 is a wasteful number, since it uses less digits than its factorization.

120939890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12093996.

The product of its (nonzero) digits is 34992, while the sum is 41.

The square root of 120939890 is about 10997.2673878559. The cubic root of 120939890 is about 494.5268273657.

The spelling of 120939890 in words is "one hundred twenty million, nine hundred thirty-nine thousand, eight hundred ninety".