22042449 has 60 divisors (see below), whose sum is σ = 39202548. Its totient is φ = 12260160.

The previous prime is 22042429. The next prime is 22042469. The reversal of 22042449 is 94424022.

It is an interprime number because it is at equal distance from previous prime (22042429) and next prime (22042469).

It can be written as a sum of positive squares in 2 ways, for example, as 12006225 + 10036224 = 3465^2 + 3168^2 .

It is not a de Polignac number, because 22042449 - 2⁸ = 22042193 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22042429) 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 59 ways as a sum of consecutive naturals, for example, 127327 + ... + 127499.

Almost surely, 2^22042449 is an apocalyptic number.

It is an amenable number.

22042449 is a deficient number, since it is larger than the sum of its proper divisors (17160099).

22042449 is a wasteful number, since it uses less digits than its factorization.

22042449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220 (or 200 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 22042449 is about 4694.9386577462. The cubic root of 22042449 is about 280.3840351091.

The spelling of 22042449 in words is "twenty-two million, forty-two thousand, four hundred forty-nine".