22042537 has 8 divisors (see below), whose sum is σ = 24162912. Its totient is φ = 19941600.

The previous prime is 22042511. The next prime is 22042547. The reversal of 22042537 is 73524022.

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

It is a cyclic number.

It is not a de Polignac number, because 22042537 - 2¹¹ = 22040489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22042547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2428 + ... + 7069.

It is an arithmetic number, because the mean of its divisors is an integer number (3020364).

Almost surely, 2^22042537 is an apocalyptic number.

It is an amenable number.

22042537 is a deficient number, since it is larger than the sum of its proper divisors (2120375).

22042537 is a wasteful number, since it uses less digits than its factorization.

22042537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9719.

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 22042537 is about 4694.9480295313. The cubic root of 22042537 is about 280.3844082341.

Adding to 22042537 its reverse (73524022), we get a palindrome (95566559).

The spelling of 22042537 in words is "twenty-two million, forty-two thousand, five hundred thirty-seven".