142805344 has 96 divisors (see below), whose sum is σ = 330946560. Its totient is φ = 59980800.

The previous prime is 142805329. The next prime is 142805371. The reversal of 142805344 is 443508241.

142805344 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250692 + ... + 251260.

It is an arithmetic number, because the mean of its divisors is an integer number (3447360).

Almost surely, 2^142805344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142805344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165473280).

142805344 is an abundant number, since it is smaller than the sum of its proper divisors (188141216).

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

142805344 is a wasteful number, since it uses less digits than its factorization.

142805344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644 (or 636 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 142805344 is about 11950.1189952234. The cubic root of 142805344 is about 522.6947683188.

The spelling of 142805344 in words is "one hundred forty-two million, eight hundred five thousand, three hundred forty-four".