122555145 has 16 divisors (see below), whose sum is σ = 197078400. Its totient is φ = 65032704.

The previous prime is 122555141. The next prime is 122555171. The reversal of 122555145 is 541555221.

It is not a de Polignac number, because 122555145 - 2² = 122555141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122555141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17544 + ... + 23513.

It is an arithmetic number, because the mean of its divisors is an integer number (12317400).

Almost surely, 2^122555145 is an apocalyptic number.

122555145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122555145 is a deficient number, since it is larger than the sum of its proper divisors (74523255).

122555145 is a wasteful number, since it uses less digits than its factorization.

122555145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41264.

The product of its digits is 10000, while the sum is 30.

The square root of 122555145 is about 11070.4627274563. The cubic root of 122555145 is about 496.7187066672.

The spelling of 122555145 in words is "one hundred twenty-two million, five hundred fifty-five thousand, one hundred forty-five".