15542142 has 32 divisors (see below), whose sum is σ = 38755584. Its totient is φ = 4036800.

The previous prime is 15542119. The next prime is 15542143. The reversal of 15542142 is 24124551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15542143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16359 + ... + 17282.

It is an arithmetic number, because the mean of its divisors is an integer number (1211112).

Almost surely, 2^15542142 is an apocalyptic number.

15542142 is an abundant number, since it is smaller than the sum of its proper divisors (23213442).

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

15542142 is a wasteful number, since it uses less digits than its factorization.

15542142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33664.

The product of its digits is 1600, while the sum is 24.

The square root of 15542142 is about 3942.3523434620. The cubic root of 15542142 is about 249.5573072218.

Adding to 15542142 its reverse (24124551), we get a palindrome (39666693).

The spelling of 15542142 in words is "fifteen million, five hundred forty-two thousand, one hundred forty-two".