142780199 has 4 divisors (see below), whose sum is σ = 145120920. Its totient is φ = 140439480.

The previous prime is 142780153. The next prime is 142780201. The reversal of 142780199 is 991087241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 142780199 - 2⁸ = 142779943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142780109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1170269 + ... + 1170390.

It is an arithmetic number, because the mean of its divisors is an integer number (36280230).

Almost surely, 2^142780199 is an apocalyptic number.

142780199 is a deficient number, since it is larger than the sum of its proper divisors (2340721).

142780199 is an equidigital number, since it uses as much as digits as its factorization.

142780199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2340720.

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 142780199 is about 11949.0668673332. The cubic root of 142780199 is about 522.6640880210.

The spelling of 142780199 in words is "one hundred forty-two million, seven hundred eighty thousand, one hundred ninety-nine".