142393812 has 48 divisors (see below), whose sum is σ = 370900992. Its totient is φ = 42144480.

The previous prime is 142393807. The next prime is 142393813. The reversal of 142393812 is 218393241.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142393813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6868 + ... + 18219.

It is an arithmetic number, because the mean of its divisors is an integer number (7727104).

Almost surely, 2^142393812 is an apocalyptic number.

142393812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

142393812 is an abundant number, since it is smaller than the sum of its proper divisors (228507180).

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

142393812 is a wasteful number, since it uses less digits than its factorization.

142393812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25148 (or 25146 counting only the distinct ones).

The product of its digits is 10368, while the sum is 33.

The square root of 142393812 is about 11932.8878315352. The cubic root of 142393812 is about 522.1921900607.

The spelling of 142393812 in words is "one hundred forty-two million, three hundred ninety-three thousand, eight hundred twelve".