16125442 has 4 divisors (see below), whose sum is σ = 24188166. Its totient is φ = 8062720.

The previous prime is 16125391. The next prime is 16125443. The reversal of 16125442 is 24452161.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 16072081 + 53361 = 4009^2 + 231^2 .

It is not an unprimeable number, because it can be changed into a prime (16125443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4031359 + ... + 4031362.

Almost surely, 2^16125442 is an apocalyptic number.

16125442 is a deficient number, since it is larger than the sum of its proper divisors (8062724).

16125442 is an equidigital number, since it uses as much as digits as its factorization.

16125442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8062723.

The product of its digits is 1920, while the sum is 25.

The square root of 16125442 is about 4015.6496361112. The cubic root of 16125442 is about 252.6410256869.

The spelling of 16125442 in words is "sixteen million, one hundred twenty-five thousand, four hundred forty-two".