120156690 has 16 divisors (see below), whose sum is σ = 288376128. Its totient is φ = 32041776.

The previous prime is 120156677. The next prime is 120156719. The reversal of 120156690 is 96651021.

It is a super-3 number, since 3×120156690³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 4005223 = 120156690 / (1 + 2 + 0 + 1 + 5 + 6 + 6 + 9 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2002582 + ... + 2002641.

It is an arithmetic number, because the mean of its divisors is an integer number (18023508).

Almost surely, 2^120156690 is an apocalyptic number.

120156690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

120156690 is an abundant number, since it is smaller than the sum of its proper divisors (168219438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

120156690 is a wasteful number, since it uses less digits than its factorization.

120156690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4005233.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 120156690 is about 10961.6007042767. The cubic root of 120156690 is about 493.4570052538.

The spelling of 120156690 in words is "one hundred twenty million, one hundred fifty-six thousand, six hundred ninety".