23154142 has 16 divisors (see below), whose sum is σ = 38059632. Its totient is φ = 10477120.

The previous prime is 23154139. The next prime is 23154143. The reversal of 23154142 is 24145132.

It is a super-2 number, since 2×23154142² = 1072228583512328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23154143) 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, 2868 + ... + 7384.

It is an arithmetic number, because the mean of its divisors is an integer number (2378727).

Almost surely, 2^23154142 is an apocalyptic number.

23154142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

23154142 is a deficient number, since it is larger than the sum of its proper divisors (14905490).

23154142 is a wasteful number, since it uses less digits than its factorization.

23154142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4763.

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

The square root of 23154142 is about 4811.8751022860. The cubic root of 23154142 is about 285.0205874119.

Adding to 23154142 its reverse (24145132), we get a palindrome (47299274).

The spelling of 23154142 in words is "twenty-three million, one hundred fifty-four thousand, one hundred forty-two".