122021442 has 24 divisors (see below), whose sum is σ = 264583020. Its totient is φ = 40642560.

The previous prime is 122021437. The next prime is 122021479. The reversal of 122021442 is 244120221.

122021442 is a `hidden beast` number, since 1 + 220 + 2 + 1 + 442 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 74287161 + 47734281 = 8619^2 + 6909^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 44034 + ... + 46722.

Almost surely, 2^122021442 is an apocalyptic number.

122021442 is an abundant number, since it is smaller than the sum of its proper divisors (142561578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122021442 is a wasteful number, since it uses less digits than its factorization.

122021442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5218 (or 5215 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 122021442 is about 11046.3316082761. The cubic root of 122021442 is about 495.9966207930.

Adding to 122021442 its reverse (244120221), we get a palindrome (366141663).

The spelling of 122021442 in words is "one hundred twenty-two million, twenty-one thousand, four hundred forty-two".