142815312 has 100 divisors (see below), whose sum is σ = 415910880. Its totient is φ = 47310912.

The previous prime is 142815307. The next prime is 142815319. The reversal of 142815312 is 213518241.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142815319) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 340639 + ... + 341057.

Almost surely, 2^142815312 is an apocalyptic number.

142815312 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 142815312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207955440).

142815312 is an abundant number, since it is smaller than the sum of its proper divisors (273095568).

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

142815312 is a wasteful number, since it uses less digits than its factorization.

142815312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702 (or 687 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 142815312 is about 11950.5360549224. The cubic root of 142815312 is about 522.7069296289.

The spelling of 142815312 in words is "one hundred forty-two million, eight hundred fifteen thousand, three hundred twelve".