122698090 has 16 divisors (see below), whose sum is σ = 222080040. Its totient is φ = 48807360.

The previous prime is 122698063. The next prime is 122698097. The reversal of 122698090 is 90896221.

It can be written as a sum of positive squares in 4 ways, for example, as 89624089 + 33074001 = 9467^2 + 5751^2 .

It is not an unprimeable number, because it can be changed into a prime (122698097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32085 + ... + 35704.

Almost surely, 2^122698090 is an apocalyptic number.

122698090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122698090 is a deficient number, since it is larger than the sum of its proper divisors (99381950).

122698090 is a wasteful number, since it uses less digits than its factorization.

122698090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67977.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 122698090 is about 11076.9169898488. The cubic root of 122698090 is about 496.9117513789.

The spelling of 122698090 in words is "one hundred twenty-two million, six hundred ninety-eight thousand, ninety".