23140742 has 4 divisors (see below), whose sum is σ = 34711116. Its totient is φ = 11570370.

The previous prime is 23140729. The next prime is 23140771. The reversal of 23140742 is 24704132.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5785184 + ... + 5785187.

It is an arithmetic number, because the mean of its divisors is an integer number (8677779).

Almost surely, 2^23140742 is an apocalyptic number.

23140742 is a deficient number, since it is larger than the sum of its proper divisors (11570374).

23140742 is a wasteful number, since it uses less digits than its factorization.

23140742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11570373.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 23140742 is about 4810.4825121811. The cubic root of 23140742 is about 284.9655934662.

Adding to 23140742 its reverse (24704132), we get a palindrome (47844874).

The spelling of 23140742 in words is "twenty-three million, one hundred forty thousand, seven hundred forty-two".