142512493 has 4 divisors (see below), whose sum is σ = 146364220. Its totient is φ = 138660768.

The previous prime is 142512463. The next prime is 142512499. The reversal of 142512493 is 394215241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 58936329 + 83576164 = 7677^2 + 9142^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-142512493 is a prime.

It is a super-2 number, since 2×142512493² = 40619621322150098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142512499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1925808 + ... + 1925881.

It is an arithmetic number, because the mean of its divisors is an integer number (36591055).

Almost surely, 2^142512493 is an apocalyptic number.

It is an amenable number.

142512493 is a deficient number, since it is larger than the sum of its proper divisors (3851727).

142512493 is an equidigital number, since it uses as much as digits as its factorization.

142512493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3851726.

The product of its digits is 8640, while the sum is 31.

The square root of 142512493 is about 11937.8596490326. The cubic root of 142512493 is about 522.3372269845.

The spelling of 142512493 in words is "one hundred forty-two million, five hundred twelve thousand, four hundred ninety-three".