142489431 has 12 divisors (see below), whose sum is σ = 235220752. Its totient is φ = 81422496.

The previous prime is 142489429. The next prime is 142489433. The reversal of 142489431 is 134984241.

It is a happy number.

142489431 is a `hidden beast` number, since 142 + 4 + 89 + 431 = 666.

It is an interprime number because it is at equal distance from previous prime (142489429) and next prime (142489433).

It is not a de Polignac number, because 142489431 - 2¹ = 142489429 is a prime.

It is a super-2 number, since 2×142489431² = 40606475893407522, 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 (142489433) 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 11 ways as a sum of consecutive naturals, for example, 1130806 + ... + 1130931.

Almost surely, 2^142489431 is an apocalyptic number.

142489431 is a deficient number, since it is larger than the sum of its proper divisors (92731321).

142489431 is a wasteful number, since it uses less digits than its factorization.

142489431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2261750 (or 2261747 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 142489431 is about 11936.8936914090. The cubic root of 142489431 is about 522.3090498268.

The spelling of 142489431 in words is "one hundred forty-two million, four hundred eighty-nine thousand, four hundred thirty-one".