16142738 has 4 divisors (see below), whose sum is σ = 24214110. Its totient is φ = 8071368.

The previous prime is 16142717. The next prime is 16142743. The reversal of 16142738 is 83724161.

16142738 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83724161 = 419 ⋅199819.

It can be written as a sum of positive squares in only one way, i.e., 10349089 + 5793649 = 3217^2 + 2407^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4035683 + ... + 4035686.

Almost surely, 2^16142738 is an apocalyptic number.

16142738 is a deficient number, since it is larger than the sum of its proper divisors (8071372).

16142738 is an equidigital number, since it uses as much as digits as its factorization.

16142738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8071371.

The product of its digits is 8064, while the sum is 32.

The square root of 16142738 is about 4017.8026332810. The cubic root of 16142738 is about 252.7313202210.

Adding to 16142738 its reverse (83724161), we get a palindrome (99866899).

The spelling of 16142738 in words is "sixteen million, one hundred forty-two thousand, seven hundred thirty-eight".