122690005 has 16 divisors (see below), whose sum is σ = 150265584. Its totient is φ = 96145920.

The previous prime is 122689997. The next prime is 122690023. The reversal of 122690005 is 500096221.

It can be written as a sum of positive squares in 8 ways, for example, as 2414916 + 120275089 = 1554^2 + 10967^2 .

It is not a de Polignac number, because 122690005 - 2³ = 122689997 is a prime.

It is a Duffinian number.

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, 56235 + ... + 58375.

It is an arithmetic number, because the mean of its divisors is an integer number (9391599).

Almost surely, 2^122690005 is an apocalyptic number.

It is an amenable number.

122690005 is a deficient number, since it is larger than the sum of its proper divisors (27575579).

122690005 is a wasteful number, since it uses less digits than its factorization.

122690005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2376.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 122690005 is about 11076.5520357194. The cubic root of 122690005 is about 496.9008367299.

The spelling of 122690005 in words is "one hundred twenty-two million, six hundred ninety thousand, five".