3999120122 has 8 divisors (see below), whose sum is σ = 5998953972. Its totient is φ = 1999468800.

The previous prime is 3999120113. The next prime is 3999120143. The reversal of 3999120122 is 2210219993.

It can be written as a sum of positive squares in 2 ways, for example, as 3397840681 + 601279441 = 58291^2 + 24521^2 .

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, 45722 + ... + 100442.

Almost surely, 2^3999120122 is an apocalyptic number.

3999120122 is a deficient number, since it is larger than the sum of its proper divisors (1999833850).

3999120122 is a wasteful number, since it uses less digits than its factorization.

3999120122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91264.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 3999120122 is about 63238.5967744383. The cubic root of 3999120122 is about 1587.2846501609.

The spelling of 3999120122 in words is "three billion, nine hundred ninety-nine million, one hundred twenty thousand, one hundred twenty-two".