40142252685 has 8 divisors (see below), whose sum is σ = 64227604320. Its totient is φ = 21409201424.

The previous prime is 40142252663. The next prime is 40142252791. The reversal of 40142252685 is 58625224104.

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 40142252685 - 2²⁰ = 40141204109 is a prime.

It is a super-2 number, since 2×40142252685² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1338075075 + ... + 1338075104.

It is an arithmetic number, because the mean of its divisors is an integer number (8028450540).

Almost surely, 2^40142252685 is an apocalyptic number.

It is an amenable number.

40142252685 is a deficient number, since it is larger than the sum of its proper divisors (24085351635).

40142252685 is a wasteful number, since it uses less digits than its factorization.

40142252685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2676150187.

The product of its (nonzero) digits is 153600, while the sum is 39.

Adding to 40142252685 its reverse (58625224104), we get a palindrome (98767476789).

The spelling of 40142252685 in words is "forty billion, one hundred forty-two million, two hundred fifty-two thousand, six hundred eighty-five".