40142135720723 has 4 divisors (see below), whose sum is σ = 42503437821960. Its totient is φ = 37780833619488.

The previous prime is 40142135720693. The next prime is 40142135720851. The reversal of 40142135720723 is 32702753124104.

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

It is a cyclic number.

It is not a de Polignac number, because 40142135720723 - 2¹⁶ = 40142135655187 is a prime.

It is a super-2 number, since 2×40142135720723² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40142135722723) 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, 1180651050593 + ... + 1180651050626.

It is an arithmetic number, because the mean of its divisors is an integer number (10625859455490).

Almost surely, 2^{40142135720723} is an apocalyptic number.

40142135720723 is a deficient number, since it is larger than the sum of its proper divisors (2361302101237).

40142135720723 is a wasteful number, since it uses less digits than its factorization.

40142135720723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2361302101236.

The product of its (nonzero) digits is 282240, while the sum is 41.

Adding to 40142135720723 its reverse (32702753124104), we get a palindrome (72844888844827).

The spelling of 40142135720723 in words is "forty trillion, one hundred forty-two billion, one hundred thirty-five million, seven hundred twenty thousand, seven hundred twenty-three".