122391078 has 32 divisors (see below), whose sum is σ = 256815360. Its totient is φ = 38831520.

The previous prime is 122391037. The next prime is 122391121. The reversal of 122391078 is 870193221.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 7401 + ... + 17307.

It is an arithmetic number, because the mean of its divisors is an integer number (8025480).

Almost surely, 2^122391078 is an apocalyptic number.

122391078 is an abundant number, since it is smaller than the sum of its proper divisors (134424282).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122391078 is a wasteful number, since it uses less digits than its factorization.

122391078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10012.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 122391078 is about 11063.0501219148. The cubic root of 122391078 is about 496.4969519583.

The spelling of 122391078 in words is "one hundred twenty-two million, three hundred ninety-one thousand, seventy-eight".