142637723 has 2 divisors, whose sum is σ = 142637724. Its totient is φ = 142637722.

The previous prime is 142637711. The next prime is 142637749. The reversal of 142637723 is 327736241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 142637723 - 2⁶ = 142637659 is a prime.

It is not a weakly prime, because it can be changed into another prime (142637023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71318861 + 71318862.

It is an arithmetic number, because the mean of its divisors is an integer number (71318862).

Almost surely, 2^142637723 is an apocalyptic number.

142637723 is a deficient number, since it is larger than the sum of its proper divisors (1).

142637723 is an equidigital number, since it uses as much as digits as its factorization.

142637723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 35.

The square root of 142637723 is about 11943.1035748670. The cubic root of 142637723 is about 522.4901799853.

The spelling of 142637723 in words is "one hundred forty-two million, six hundred thirty-seven thousand, seven hundred twenty-three".