142734720 has 128 divisors (see below), whose sum is σ = 481839840. Its totient is φ = 35815424.

The previous prime is 142734679. The next prime is 142734731. The reversal of 142734720 is 27437241.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 30454 + ... + 34826.

Almost surely, 2^142734720 is an apocalyptic number.

142734720 is a gapful number since it is divisible by the number (10) 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 142734720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240919920).

142734720 is an abundant number, since it is smaller than the sum of its proper divisors (339105120).

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

142734720 is a wasteful number, since it uses less digits than its factorization.

142734720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4412 (or 4400 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 142734720 is about 11947.1636801376. The cubic root of 142734720 is about 522.6085883451.

The spelling of 142734720 in words is "one hundred forty-two million, seven hundred thirty-four thousand, seven hundred twenty".