22742071 has 6 divisors (see below), whose sum is σ = 24997616. Its totient is φ = 20674500.

The previous prime is 22742059. The next prime is 22742113. The reversal of 22742071 is 17024722.

It is not a de Polignac number, because 22742071 - 2¹⁷ = 22610999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22742021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 93855 + ... + 94096.

Almost surely, 2^22742071 is an apocalyptic number.

22742071 is a deficient number, since it is larger than the sum of its proper divisors (2255545).

22742071 is a wasteful number, since it uses less digits than its factorization.

22742071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187973 (or 187962 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 22742071 is about 4768.8647496024. The cubic root of 22742071 is about 283.3196328631.

Adding to 22742071 its reverse (17024722), we get a palindrome (39766793).

The spelling of 22742071 in words is "twenty-two million, seven hundred forty-two thousand, seventy-one".