122428491 has 8 divisors (see below), whose sum is σ = 163391184. Its totient is φ = 81542400.

The previous prime is 122428451. The next prime is 122428499. The reversal of 122428491 is 194824221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 122428491 - 2¹⁵ = 122395723 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (122428499) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 15310 + ... + 21891.

It is an arithmetic number, because the mean of its divisors is an integer number (20423898).

Almost surely, 2^122428491 is an apocalyptic number.

122428491 is a deficient number, since it is larger than the sum of its proper divisors (40962693).

122428491 is a wasteful number, since it uses less digits than its factorization.

122428491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38301.

The product of its digits is 9216, while the sum is 33.

The square root of 122428491 is about 11064.7408916793. The cubic root of 122428491 is about 496.5475372034.

The spelling of 122428491 in words is "one hundred twenty-two million, four hundred twenty-eight thousand, four hundred ninety-one".