7898120122 has 8 divisors (see below), whose sum is σ = 12167374356. Its totient is φ = 3842328672.

The previous prime is 7898120107. The next prime is 7898120129. The reversal of 7898120122 is 2210218987.

It can be written as a sum of positive squares in 2 ways, for example, as 7855099641 + 43020481 = 88629^2 + 6559^2 .

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

It is not an unprimeable number, because it can be changed into a prime (7898120129) 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, 53365603 + ... + 53365750.

Almost surely, 2^7898120122 is an apocalyptic number.

7898120122 is a deficient number, since it is larger than the sum of its proper divisors (4269254234).

7898120122 is a wasteful number, since it uses less digits than its factorization.

7898120122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106731392.

The product of its (nonzero) digits is 32256, while the sum is 40.

The square root of 7898120122 is about 88871.3684040029. The cubic root of 7898120122 is about 1991.4737130353.

The spelling of 7898120122 in words is "seven billion, eight hundred ninety-eight million, one hundred twenty thousand, one hundred twenty-two".