23001542 has 4 divisors (see below), whose sum is σ = 34502316. Its totient is φ = 11500770.

The previous prime is 23001509. The next prime is 23001551. The reversal of 23001542 is 24510032.

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

It is a self number, because there is not a number n which added to its sum of digits gives 23001542.

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, 5750384 + ... + 5750387.

It is an arithmetic number, because the mean of its divisors is an integer number (8625579).

Almost surely, 2^23001542 is an apocalyptic number.

23001542 is a deficient number, since it is larger than the sum of its proper divisors (11500774).

23001542 is a wasteful number, since it uses less digits than its factorization.

23001542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11500773.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 23001542 is about 4795.9922852315. The cubic root of 23001542 is about 284.3930532676.

Adding to 23001542 its reverse (24510032), we get a palindrome (47511574).

The spelling of 23001542 in words is "twenty-three million, one thousand, five hundred forty-two".