23009142 has 16 divisors (see below), whose sum is σ = 49558320. Its totient is φ = 7079712.

The previous prime is 23009101. The next prime is 23009149. The reversal of 23009142 is 24190032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23009149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147417 + ... + 147572.

It is an arithmetic number, because the mean of its divisors is an integer number (3097395).

Almost surely, 2^23009142 is an apocalyptic number.

23009142 is an abundant number, since it is smaller than the sum of its proper divisors (26549178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23009142 is a wasteful number, since it uses less digits than its factorization.

23009142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295007.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 23009142 is about 4796.7845480071. The cubic root of 23009142 is about 284.4243721708.

Adding to 23009142 its reverse (24190032), we get a palindrome (47199174).

The spelling of 23009142 in words is "twenty-three million, nine thousand, one hundred forty-two".