16439142 has 16 divisors (see below), whose sum is σ = 34608960. Its totient is φ = 5191272.

The previous prime is 16439141. The next prime is 16439147. The reversal of 16439142 is 24193461.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16439141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71988 + ... + 72215.

It is an arithmetic number, because the mean of its divisors is an integer number (2163060).

Almost surely, 2^16439142 is an apocalyptic number.

16439142 is an abundant number, since it is smaller than the sum of its proper divisors (18169818).

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

16439142 is a wasteful number, since it uses less digits than its factorization.

16439142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144227.

The product of its digits is 5184, while the sum is 30.

The square root of 16439142 is about 4054.5211801149. The cubic root of 16439142 is about 254.2687856724.

The spelling of 16439142 in words is "sixteen million, four hundred thirty-nine thousand, one hundred forty-two".