142994439 has 24 divisors (see below), whose sum is σ = 236367872. Its totient is φ = 81602640.

The previous prime is 142994419. The next prime is 142994459. The reversal of 142994439 is 934499241.

It is an interprime number because it is at equal distance from previous prime (142994419) and next prime (142994459).

It is not a de Polignac number, because 142994439 - 2⁵ = 142994407 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142994394 and 142994403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142994419) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91902 + ... + 93444.

Almost surely, 2^142994439 is an apocalyptic number.

142994439 is a deficient number, since it is larger than the sum of its proper divisors (93373433).

142994439 is a wasteful number, since it uses less digits than its factorization.

142994439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3027 (or 3024 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 142994439 is about 11958.0282237499. The cubic root of 142994439 is about 522.9253744730.

The spelling of 142994439 in words is "one hundred forty-two million, nine hundred ninety-four thousand, four hundred thirty-nine".