142713731 has 8 divisors (see below), whose sum is σ = 150558720. Its totient is φ = 134902152.

The previous prime is 142713721. The next prime is 142713733. The reversal of 142713731 is 137317241.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 142713731 - 2¹⁰ = 142712707 is a prime.

It is a super-2 number, since 2×142713731² = 40734418031880722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142713694 and 142713703.

It is not an unprimeable number, because it can be changed into a prime (142713733) 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, 686 + ... + 16908.

It is an arithmetic number, because the mean of its divisors is an integer number (18819840).

Almost surely, 2^142713731 is an apocalyptic number.

142713731 is a deficient number, since it is larger than the sum of its proper divisors (7844989).

142713731 is a wasteful number, since it uses less digits than its factorization.

142713731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16705.

The product of its digits is 3528, while the sum is 29.

The square root of 142713731 is about 11946.2852385166. The cubic root of 142713731 is about 522.5829707300.

The spelling of 142713731 in words is "one hundred forty-two million, seven hundred thirteen thousand, seven hundred thirty-one".