142285920 has 384 divisors, whose sum is σ = 564350976. Its totient is φ = 29392896.

The previous prime is 142285907. The next prime is 142285931. The reversal of 142285920 is 29582241.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2684614 + ... + 2684666.

It is an arithmetic number, because the mean of its divisors is an integer number (1469664).

Almost surely, 2^142285920 is an apocalyptic number.

142285920 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 142285920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282175488).

142285920 is an abundant number, since it is smaller than the sum of its proper divisors (422065056).

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

142285920 is a wasteful number, since it uses less digits than its factorization.

142285920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 134 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 142285920 is about 11928.3661915620. The cubic root of 142285920 is about 522.0602681401.

The spelling of 142285920 in words is "one hundred forty-two million, two hundred eighty-five thousand, nine hundred twenty".