149122865 has 16 divisors (see below), whose sum is σ = 185504256. Its totient is φ = 114960000.

The previous prime is 149122859. The next prime is 149122871. The reversal of 149122865 is 568221941.

It is an interprime number because it is at equal distance from previous prime (149122859) and next prime (149122871).

It is not a de Polignac number, because 149122865 - 2⁸ = 149122609 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36989 + ... + 40821.

It is an arithmetic number, because the mean of its divisors is an integer number (11594016).

Almost surely, 2^149122865 is an apocalyptic number.

It is an amenable number.

149122865 is a deficient number, since it is larger than the sum of its proper divisors (36381391).

149122865 is a wasteful number, since it uses less digits than its factorization.

149122865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4120.

The product of its digits is 34560, while the sum is 38.

The square root of 149122865 is about 12211.5873251597. The cubic root of 149122865 is about 530.2915981705.

The spelling of 149122865 in words is "one hundred forty-nine million, one hundred twenty-two thousand, eight hundred sixty-five".