142144993 has 8 divisors (see below), whose sum is σ = 145162368. Its totient is φ = 139140144.

The previous prime is 142144969. The next prime is 142144997. The reversal of 142144993 is 399441241.

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-142144993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142144997) 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, 21880 + ... + 27622.

It is an arithmetic number, because the mean of its divisors is an integer number (18145296).

Almost surely, 2^142144993 is an apocalyptic number.

It is an amenable number.

142144993 is a deficient number, since it is larger than the sum of its proper divisors (3017375).

142144993 is an equidigital number, since it uses as much as digits as its factorization.

142144993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6263.

The product of its digits is 31104, while the sum is 37.

The square root of 142144993 is about 11922.4575067391. The cubic root of 142144993 is about 521.8878531167.

The spelling of 142144993 in words is "one hundred forty-two million, one hundred forty-four thousand, nine hundred ninety-three".