122791898 has 8 divisors (see below), whose sum is σ = 185361492. Its totient is φ = 61004736.

The previous prime is 122791891. The next prime is 122791919. The reversal of 122791898 is 898197221.

It can be written as a sum of positive squares in 2 ways, for example, as 116920969 + 5870929 = 10813^2 + 2423^2 .

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 (122791891) 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, 195215 + ... + 195842.

Almost surely, 2^122791898 is an apocalyptic number.

122791898 is a deficient number, since it is larger than the sum of its proper divisors (62569594).

122791898 is a wasteful number, since it uses less digits than its factorization.

122791898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391216.

The product of its digits is 145152, while the sum is 47.

The square root of 122791898 is about 11081.1505720300. The cubic root of 122791898 is about 497.0383559660.

The spelling of 122791898 in words is "one hundred twenty-two million, seven hundred ninety-one thousand, eight hundred ninety-eight".