16142538 has 16 divisors (see below), whose sum is σ = 32423040. Its totient is φ = 5357856.

The previous prime is 16142521. The next prime is 16142543. The reversal of 16142538 is 83524161.

16142538 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

16142538 is an esthetic number in base 3, because in such base its adjacent digits differ by 1.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4195 + ... + 7062.

It is an arithmetic number, because the mean of its divisors is an integer number (2026440).

Almost surely, 2^16142538 is an apocalyptic number.

16142538 is an abundant number, since it is smaller than the sum of its proper divisors (16280502).

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

16142538 is a wasteful number, since it uses less digits than its factorization.

16142538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11501.

The product of its digits is 5760, while the sum is 30.

The square root of 16142538 is about 4017.7777439774. Note that the first 4 decimals coincide. The cubic root of 16142538 is about 252.7302764808.

Adding to 16142538 its reverse (83524161), we get a palindrome (99666699).

The spelling of 16142538 in words is "sixteen million, one hundred forty-two thousand, five hundred thirty-eight".