142389072 has 120 divisors (see below), whose sum is σ = 471219840. Its totient is φ = 39271680.

The previous prime is 142389041. The next prime is 142389083. The reversal of 142389072 is 270983241.

142389072 is digitally balanced in base 2, 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 (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26797 + ... + 31667.

It is an arithmetic number, because the mean of its divisors is an integer number (3926832).

Almost surely, 2^142389072 is an apocalyptic number.

142389072 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 142389072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235609920).

142389072 is an abundant number, since it is smaller than the sum of its proper divisors (328830768).

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

142389072 is a wasteful number, since it uses less digits than its factorization.

142389072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4921 (or 4912 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 142389072 is about 11932.6892191157. The cubic root of 142389072 is about 522.1863957583.

The spelling of 142389072 in words is "one hundred forty-two million, three hundred eighty-nine thousand, seventy-two".