142845993 has 6 divisors (see below), whose sum is σ = 206333114. Its totient is φ = 95230656.

The previous prime is 142845977. The next prime is 142846003. The reversal of 142845993 is 399548241.

It can be written as a sum of positive squares in only one way, i.e., 140849424 + 1996569 = 11868^2 + 1413^2 .

It is not a de Polignac number, because 142845993 - 2⁴ = 142845977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142845973) 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, 7935880 + ... + 7935897.

Almost surely, 2^142845993 is an apocalyptic number.

It is an amenable number.

142845993 is a deficient number, since it is larger than the sum of its proper divisors (63487121).

142845993 is a wasteful number, since it uses less digits than its factorization.

142845993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15871783 (or 15871780 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 142845993 is about 11951.8196522538. The cubic root of 142845993 is about 522.7443579756.

The spelling of 142845993 in words is "one hundred forty-two million, eight hundred forty-five thousand, nine hundred ninety-three".