122642135 has 32 divisors (see below), whose sum is σ = 184149504. Its totient is φ = 76176000.

The previous prime is 122642123. The next prime is 122642137. The reversal of 122642135 is 531246221.

It is a happy number.

It is not a de Polignac number, because 122642135 - 2⁴ = 122642119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122642137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 177140 + ... + 177830.

It is an arithmetic number, because the mean of its divisors is an integer number (5754672).

Almost surely, 2^122642135 is an apocalyptic number.

122642135 is a deficient number, since it is larger than the sum of its proper divisors (61507369).

122642135 is a wasteful number, since it uses less digits than its factorization.

122642135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175.

The product of its digits is 2880, while the sum is 26.

The square root of 122642135 is about 11074.3909539080. The cubic root of 122642135 is about 496.8362030016.

Adding to 122642135 its reverse (531246221), we get a palindrome (653888356).

The spelling of 122642135 in words is "one hundred twenty-two million, six hundred forty-two thousand, one hundred thirty-five".