15842142 has 48 divisors (see below), whose sum is σ = 36599472. Its totient is φ = 5132160.

The previous prime is 15842131. The next prime is 15842173. The reversal of 15842142 is 24124851.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17542 + ... + 18422.

It is an arithmetic number, because the mean of its divisors is an integer number (762489).

Almost surely, 2^15842142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15842142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18299736).

15842142 is an abundant number, since it is smaller than the sum of its proper divisors (20757330).

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

15842142 is an equidigital number, since it uses as much as digits as its factorization.

15842142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935 (or 923 counting only the distinct ones).

The product of its digits is 2560, while the sum is 27.

The square root of 15842142 is about 3980.2188382048. The cubic root of 15842142 is about 251.1527670095.

Adding to 15842142 its reverse (24124851), we get a palindrome (39966993).

The spelling of 15842142 in words is "fifteen million, eight hundred forty-two thousand, one hundred forty-two".