142790217 has 8 divisors (see below), whose sum is σ = 190583040. Its totient is φ = 95095440.

The previous prime is 142790213. The next prime is 142790231. The reversal of 142790217 is 712097241.

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

It is not a de Polignac number, because 142790217 - 2² = 142790213 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142790213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21042 + ... + 26987.

It is an arithmetic number, because the mean of its divisors is an integer number (23822880).

Almost surely, 2^142790217 is an apocalyptic number.

It is an amenable number.

142790217 is a deficient number, since it is larger than the sum of its proper divisors (47792823).

142790217 is an equidigital number, since it uses as much as digits as its factorization.

142790217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49023.

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 142790217 is about 11949.4860558938. The cubic root of 142790217 is about 522.6763117663.

The spelling of 142790217 in words is "one hundred forty-two million, seven hundred ninety thousand, two hundred seventeen".