122451985 has 16 divisors (see below), whose sum is σ = 149357520. Its totient is φ = 96363520.

The previous prime is 122451971. The next prime is 122451997. The reversal of 122451985 is 589154221.

It can be written as a sum of positive squares in 8 ways, for example, as 2702736 + 119749249 = 1644^2 + 10943^2 .

It is not a de Polignac number, because 122451985 - 2⁹ = 122451473 is a prime.

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, 103095 + ... + 104275.

It is an arithmetic number, because the mean of its divisors is an integer number (9334845).

Almost surely, 2^122451985 is an apocalyptic number.

It is an amenable number.

122451985 is a deficient number, since it is larger than the sum of its proper divisors (26905535).

122451985 is a wasteful number, since it uses less digits than its factorization.

122451985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508.

The product of its digits is 28800, while the sum is 37.

The square root of 122451985 is about 11065.8025014004. The cubic root of 122451985 is about 496.5792976257.

The spelling of 122451985 in words is "one hundred twenty-two million, four hundred fifty-one thousand, nine hundred eighty-five".