142747937 has 4 divisors (see below), whose sum is σ = 146229636. Its totient is φ = 139266240.

The previous prime is 142747909. The next prime is 142747981. The reversal of 142747937 is 739747241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 739747241 = 47 ⋅15739303.

It can be written as a sum of positive squares in 2 ways, for example, as 4426816 + 138321121 = 2104^2 + 11761^2 .

It is a cyclic number.

It is not a de Polignac number, because 142747937 - 2¹⁰ = 142746913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142747907) 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, 1740788 + ... + 1740869.

It is an arithmetic number, because the mean of its divisors is an integer number (36557409).

Almost surely, 2^142747937 is an apocalyptic number.

It is an amenable number.

142747937 is a deficient number, since it is larger than the sum of its proper divisors (3481699).

142747937 is an equidigital number, since it uses as much as digits as its factorization.

142747937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3481698.

The product of its digits is 296352, while the sum is 44.

The square root of 142747937 is about 11947.7168111736. The cubic root of 142747937 is about 522.6247187454.

The spelling of 142747937 in words is "one hundred forty-two million, seven hundred forty-seven thousand, nine hundred thirty-seven".