40136642 has 32 divisors (see below), whose sum is σ = 75019392. Its totient is φ = 15681024.

The previous prime is 40136623. The next prime is 40136647. The reversal of 40136642 is 24663104.

40136642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40136642² = 3221900062072328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (40136647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13778 + ... + 16434.

It is an arithmetic number, because the mean of its divisors is an integer number (2344356).

Almost surely, 2^40136642 is an apocalyptic number.

40136642 is a deficient number, since it is larger than the sum of its proper divisors (34882750).

40136642 is a wasteful number, since it uses less digits than its factorization.

40136642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2762.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 40136642 is about 6335.3486091927. The cubic root of 40136642 is about 342.3841709663.

Adding to 40136642 its reverse (24663104), we get a palindrome (64799746).

The spelling of 40136642 in words is "forty million, one hundred thirty-six thousand, six hundred forty-two".