142180730 has 16 divisors (see below), whose sum is σ = 258461064. Its totient is φ = 56308800.

The previous prime is 142180729. The next prime is 142180763. The reversal of 142180730 is 37081241.

It can be written as a sum of positive squares in 4 ways, for example, as 142157929 + 22801 = 11923^2 + 151^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 142180730.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69377 + ... + 71396.

Almost surely, 2^142180730 is an apocalyptic number.

142180730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142180730 is a deficient number, since it is larger than the sum of its proper divisors (116280334).

142180730 is a wasteful number, since it uses less digits than its factorization.

142180730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140881.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 142180730 is about 11923.9561387989. The cubic root of 142180730 is about 521.9315857942.

The spelling of 142180730 in words is "one hundred forty-two million, one hundred eighty thousand, seven hundred thirty".