23151442 has 8 divisors (see below), whose sum is σ = 34879500. Its totient is φ = 11524944.

The previous prime is 23151437. The next prime is 23151473. The reversal of 23151442 is 24415132.

It can be written as a sum of positive squares in 2 ways, for example, as 19545241 + 3606201 = 4421^2 + 1899^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24817 + ... + 25732.

Almost surely, 2^23151442 is an apocalyptic number.

23151442 is a deficient number, since it is larger than the sum of its proper divisors (11728058).

23151442 is a wasteful number, since it uses less digits than its factorization.

23151442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50780.

The product of its digits is 960, while the sum is 22.

The square root of 23151442 is about 4811.5945381963. The cubic root of 23151442 is about 285.0095082495.

Adding to 23151442 its reverse (24415132), we get a palindrome (47566574).

The spelling of 23151442 in words is "twenty-three million, one hundred fifty-one thousand, four hundred forty-two".