122428549 has 2 divisors, whose sum is σ = 122428550. Its totient is φ = 122428548.

The previous prime is 122428541. The next prime is 122428573. The reversal of 122428549 is 945824221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105206049 + 17222500 = 10257^2 + 4150^2 .

It is a cyclic number.

It is not a de Polignac number, because 122428549 - 2³ = 122428541 is a prime.

It is a super-2 number, since 2×122428549² = 29977499220490802, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122428541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61214274 + 61214275.

It is an arithmetic number, because the mean of its divisors is an integer number (61214275).

Almost surely, 2^122428549 is an apocalyptic number.

It is an amenable number.

122428549 is a deficient number, since it is larger than the sum of its proper divisors (1).

122428549 is an equidigital number, since it uses as much as digits as its factorization.

122428549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46080, while the sum is 37.

The square root of 122428549 is about 11064.7435126170. The cubic root of 122428549 is about 496.5476156159.

The spelling of 122428549 in words is "one hundred twenty-two million, four hundred twenty-eight thousand, five hundred forty-nine".