142647492 has 72 divisors (see below), whose sum is σ = 372207360. Its totient is φ = 42456960.

The previous prime is 142647437. The next prime is 142647517. The reversal of 142647492 is 294746241.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 142647492.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61734 + ... + 64002.

Almost surely, 2^142647492 is an apocalyptic number.

142647492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142647492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186103680).

142647492 is an abundant number, since it is smaller than the sum of its proper divisors (229559868).

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

142647492 is a wasteful number, since it uses less digits than its factorization.

142647492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2333 (or 2318 counting only the distinct ones).

The product of its digits is 96768, while the sum is 39.

The square root of 142647492 is about 11943.5125486600. The cubic root of 142647492 is about 522.5021078492.

The spelling of 142647492 in words is "one hundred forty-two million, six hundred forty-seven thousand, four hundred ninety-two".