23215142 has 8 divisors (see below), whose sum is σ = 36336816. Its totient is φ = 11102872.

The previous prime is 23215139. The next prime is 23215151. The reversal of 23215142 is 24151232.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252293 + ... + 252384.

It is an arithmetic number, because the mean of its divisors is an integer number (4542102).

Almost surely, 2^23215142 is an apocalyptic number.

23215142 is a deficient number, since it is larger than the sum of its proper divisors (13121674).

23215142 is a wasteful number, since it uses less digits than its factorization.

23215142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504702.

The product of its digits is 480, while the sum is 20.

The square root of 23215142 is about 4818.2094184458. The cubic root of 23215142 is about 285.2706652023.

Adding to 23215142 its reverse (24151232), we get a palindrome (47366374).

The spelling of 23215142 in words is "twenty-three million, two hundred fifteen thousand, one hundred forty-two".