40136142 has 16 divisors (see below), whose sum is σ = 80766720. Its totient is φ = 13296312.

The previous prime is 40136141. The next prime is 40136153. The reversal of 40136142 is 24163104.

It is a super-2 number, since 2×40136142² = 3221819789288328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40136141) 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, 19542 + ... + 21497.

It is an arithmetic number, because the mean of its divisors is an integer number (5047920).

Almost surely, 2^40136142 is an apocalyptic number.

40136142 is an abundant number, since it is smaller than the sum of its proper divisors (40630578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40136142 is a wasteful number, since it uses less digits than its factorization.

40136142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41207.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 40136142 is about 6335.3091479422. The cubic root of 40136142 is about 342.3827492164.

Adding to 40136142 its reverse (24163104), we get a palindrome (64299246).

The spelling of 40136142 in words is "forty million, one hundred thirty-six thousand, one hundred forty-two".