15320142 has 24 divisors (see below), whose sum is σ = 34004880. Its totient is φ = 4981920.

The previous prime is 15320141. The next prime is 15320189. The reversal of 15320142 is 24102351.

15320142 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15320141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9642 + ... + 11117.

It is an arithmetic number, because the mean of its divisors is an integer number (1416870).

Almost surely, 2^15320142 is an apocalyptic number.

15320142 is an abundant number, since it is smaller than the sum of its proper divisors (18684738).

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

15320142 is a wasteful number, since it uses less digits than its factorization.

15320142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20808 (or 20805 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 15320142 is about 3914.0952977668. The cubic root of 15320142 is about 248.3634002102.

Adding to 15320142 its reverse (24102351), we get a palindrome (39422493).

The spelling of 15320142 in words is "fifteen million, three hundred twenty thousand, one hundred forty-two".