142881660 has 36 divisors (see below), whose sum is σ = 433408248. Its totient is φ = 38101728.

The previous prime is 142881649. The next prime is 142881667. The reversal of 142881660 is 66188241.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142881667) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 396714 + ... + 397073.

It is an arithmetic number, because the mean of its divisors is an integer number (12039118).

Almost surely, 2^142881660 is an apocalyptic number.

142881660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142881660 is an abundant number, since it is smaller than the sum of its proper divisors (290526588).

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

142881660 is a wasteful number, since it uses less digits than its factorization.

142881660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793802 (or 793797 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 142881660 is about 11953.3116750129. The cubic root of 142881660 is about 522.7878621044.

The spelling of 142881660 in words is "one hundred forty-two million, eight hundred eighty-one thousand, six hundred sixty".