142890720 has 288 divisors, whose sum is σ = 549545472. Its totient is φ = 30514176.

The previous prime is 142890701. The next prime is 142890757. The reversal of 142890720 is 27098241.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3323019 + ... + 3323061.

It is an arithmetic number, because the mean of its divisors is an integer number (1908144).

Almost surely, 2^142890720 is an apocalyptic number.

142890720 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 142890720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274772736).

142890720 is an abundant number, since it is smaller than the sum of its proper divisors (406654752).

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

142890720 is a wasteful number, since it uses less digits than its factorization.

142890720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 142890720 is about 11953.6906434791. The cubic root of 142890720 is about 522.7989117099.

The spelling of 142890720 in words is "one hundred forty-two million, eight hundred ninety thousand, seven hundred twenty".