142443983 has 6 divisors (see below), whose sum is σ = 156570792. Its totient is φ = 129494420.

The previous prime is 142443979. The next prime is 142443989. The reversal of 142443983 is 389344241.

It is not a de Polignac number, because 142443983 - 2² = 142443979 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 (142443989) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 588491 + ... + 588732.

It is an arithmetic number, because the mean of its divisors is an integer number (26095132).

Almost surely, 2^142443983 is an apocalyptic number.

142443983 is a deficient number, since it is larger than the sum of its proper divisors (14126809).

142443983 is a wasteful number, since it uses less digits than its factorization.

142443983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177245 (or 1177234 counting only the distinct ones).

The product of its digits is 82944, while the sum is 38.

The square root of 142443983 is about 11934.9898617468. The cubic root of 142443983 is about 522.2535125476.

The spelling of 142443983 in words is "one hundred forty-two million, four hundred forty-three thousand, nine hundred eighty-three".