122491885 has 8 divisors (see below), whose sum is σ = 155636856. Its totient is φ = 92229120.

The previous prime is 122491861. The next prime is 122491903. The reversal of 122491885 is 588194221.

It can be written as a sum of positive squares in 4 ways, for example, as 39262756 + 83229129 = 6266^2 + 9123^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-122491885 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 720456 + ... + 720625.

It is an arithmetic number, because the mean of its divisors is an integer number (19454607).

Almost surely, 2^122491885 is an apocalyptic number.

It is an amenable number.

122491885 is a deficient number, since it is larger than the sum of its proper divisors (33144971).

122491885 is a wasteful number, since it uses less digits than its factorization.

122491885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1441103.

The product of its digits is 46080, while the sum is 40.

The square root of 122491885 is about 11067.6052061862. The cubic root of 122491885 is about 496.6332272328.

The spelling of 122491885 in words is "one hundred twenty-two million, four hundred ninety-one thousand, eight hundred eighty-five".