142881730 has 16 divisors (see below), whose sum is σ = 257621760. Its totient is φ = 57056112.

The previous prime is 142881709. The next prime is 142881737. The reversal of 142881730 is 37188241.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (142881737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5700 + ... + 17839.

It is an arithmetic number, because the mean of its divisors is an integer number (16101360).

Almost surely, 2^142881730 is an apocalyptic number.

142881730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142881730 is a deficient number, since it is larger than the sum of its proper divisors (114740030).

142881730 is a wasteful number, since it uses less digits than its factorization.

142881730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24153.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 142881730 is about 11953.3146030714. The cubic root of 142881730 is about 522.7879474784.

The spelling of 142881730 in words is "one hundred forty-two million, eight hundred eighty-one thousand, seven hundred thirty".