142278660 has 96 divisors (see below), whose sum is σ = 445495680. Its totient is φ = 37696896.

The previous prime is 142278641. The next prime is 142278691. The reversal of 142278660 is 66872241.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 92659 + ... + 94181.

It is an arithmetic number, because the mean of its divisors is an integer number (4640580).

Almost surely, 2^142278660 is an apocalyptic number.

142278660 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 142278660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222747840).

142278660 is an abundant number, since it is smaller than the sum of its proper divisors (303217020).

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

142278660 is a wasteful number, since it uses less digits than its factorization.

142278660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1714 (or 1706 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 142278660 is about 11928.0618710669. The cubic root of 142278660 is about 522.0513887841.

The spelling of 142278660 in words is "one hundred forty-two million, two hundred seventy-eight thousand, six hundred sixty".