142980405 has 8 divisors (see below), whose sum is σ = 228768672. Its totient is φ = 76256208.

The previous prime is 142980391. The next prime is 142980427. The reversal of 142980405 is 504089241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 142980405 - 2⁴ = 142980389 is a prime.

It is a congruent number.

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, 4765999 + ... + 4766028.

It is an arithmetic number, because the mean of its divisors is an integer number (28596084).

Almost surely, 2^142980405 is an apocalyptic number.

142980405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142980405 is a deficient number, since it is larger than the sum of its proper divisors (85788267).

142980405 is an equidigital number, since it uses as much as digits as its factorization.

142980405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9532035.

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

The square root of 142980405 is about 11957.4414069231. The cubic root of 142980405 is about 522.9082666404.

The spelling of 142980405 in words is "one hundred forty-two million, nine hundred eighty thousand, four hundred five".