142489919 has 16 divisors (see below), whose sum is σ = 172806144. Its totient is φ = 115711200.

The previous prime is 142489913. The next prime is 142489931. The reversal of 142489919 is 919984241.

It is not a de Polignac number, because 142489919 - 2⁸ = 142489663 is a prime.

It is a super-2 number, since 2×142489919² = 40606754033253122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142489913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11639 + ... + 20504.

It is an arithmetic number, because the mean of its divisors is an integer number (10800384).

Almost surely, 2^142489919 is an apocalyptic number.

142489919 is a deficient number, since it is larger than the sum of its proper divisors (30316225).

142489919 is a wasteful number, since it uses less digits than its factorization.

142489919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32198.

The product of its digits is 186624, while the sum is 47.

The square root of 142489919 is about 11936.9141322203. The cubic root of 142489919 is about 522.3096460968.

The spelling of 142489919 in words is "one hundred forty-two million, four hundred eighty-nine thousand, nine hundred nineteen".