22742137 has 8 divisors (see below), whose sum is σ = 24992352. Its totient is φ = 20522400.

The previous prime is 22742131. The next prime is 22742149. The reversal of 22742137 is 73124722.

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 22742137 - 2¹⁵ = 22709369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22742131) 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, 6039 + ... + 9052.

It is an arithmetic number, because the mean of its divisors is an integer number (3124044).

Almost surely, 2^22742137 is an apocalyptic number.

It is an amenable number.

22742137 is a deficient number, since it is larger than the sum of its proper divisors (2250215).

22742137 is a wasteful number, since it uses less digits than its factorization.

22742137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15239.

The product of its digits is 4704, while the sum is 28.

The square root of 22742137 is about 4768.8716694833. The cubic root of 22742137 is about 283.3199069378.

Adding to 22742137 its reverse (73124722), we get a palindrome (95866859).

The spelling of 22742137 in words is "twenty-two million, seven hundred forty-two thousand, one hundred thirty-seven".