120999995 has 4 divisors (see below), whose sum is σ = 145200000. Its totient is φ = 96799992.

The previous prime is 120999947. The next prime is 120999997. The reversal of 120999995 is 599999021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120999995 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120999997) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12099995 + ... + 12100004.

It is an arithmetic number, because the mean of its divisors is an integer number (36300000).

Almost surely, 2^120999995 is an apocalyptic number.

120999995 is a deficient number, since it is larger than the sum of its proper divisors (24200005).

120999995 is an equidigital number, since it uses as much as digits as its factorization.

120999995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24200004.

The product of its (nonzero) digits is 590490, while the sum is 53.

The square root of 120999995 is about 10999.9997727273. Note that the first 3 decimals coincide. The cubic root of 120999995 is about 494.6087375121.

The spelling of 120999995 in words is "one hundred twenty million, nine hundred ninety-nine thousand, nine hundred ninety-five".