23742197 has 4 divisors (see below), whose sum is σ = 24383916. Its totient is φ = 23100480.

The previous prime is 23742193. The next prime is 23742203. The reversal of 23742197 is 79124732.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22648081 + 1094116 = 4759^2 + 1046^2 .

It is a cyclic number.

It is not a de Polignac number, because 23742197 - 2² = 23742193 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 (23742193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320804 + ... + 320877.

It is an arithmetic number, because the mean of its divisors is an integer number (6095979).

Almost surely, 2^23742197 is an apocalyptic number.

It is an amenable number.

23742197 is a deficient number, since it is larger than the sum of its proper divisors (641719).

23742197 is an equidigital number, since it uses as much as digits as its factorization.

23742197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641718.

The product of its digits is 21168, while the sum is 35.

The square root of 23742197 is about 4872.5965357292. The cubic root of 23742197 is about 287.4133707490.

The spelling of 23742197 in words is "twenty-three million, seven hundred forty-two thousand, one hundred ninety-seven".