122726145 has 32 divisors (see below), whose sum is σ = 209139840. Its totient is φ = 61240320.

The previous prime is 122726141. The next prime is 122726203. The reversal of 122726145 is 541627221.

It is not a de Polignac number, because 122726145 - 2² = 122726141 is a prime.

It is a super-2 number, since 2×122726145² = 30123413333122050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122726141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44826 + ... + 47484.

It is an arithmetic number, because the mean of its divisors is an integer number (6535620).

Almost surely, 2^122726145 is an apocalyptic number.

122726145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

122726145 is a deficient number, since it is larger than the sum of its proper divisors (86413695).

122726145 is a wasteful number, since it uses less digits than its factorization.

122726145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2865.

The product of its digits is 6720, while the sum is 30.

The square root of 122726145 is about 11078.1832896915. The cubic root of 122726145 is about 496.9496215603.

It can be divided in two parts, 1227 and 26145, that added together give a palindrome (27372).

The spelling of 122726145 in words is "one hundred twenty-two million, seven hundred twenty-six thousand, one hundred forty-five".