142220983 has 8 divisors (see below), whose sum is σ = 148633056. Its totient is φ = 135828000.

The previous prime is 142220971. The next prime is 142220989. The reversal of 142220983 is 389022241.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142220983 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 (142220989) 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, 11713 + ... + 20533.

It is an arithmetic number, because the mean of its divisors is an integer number (18579132).

Almost surely, 2^142220983 is an apocalyptic number.

142220983 is a deficient number, since it is larger than the sum of its proper divisors (6412073).

142220983 is an equidigital number, since it uses as much as digits as its factorization.

142220983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9545.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 142220983 is about 11925.6439239145. The cubic root of 142220983 is about 521.9808360918.

The spelling of 142220983 in words is "one hundred forty-two million, two hundred twenty thousand, nine hundred eighty-three".