40136742 has 16 divisors (see below), whose sum is σ = 89192880. Its totient is φ = 13378896.

The previous prime is 40136713. The next prime is 40136773. The reversal of 40136742 is 24763104.

It is a super-2 number, since 2×40136742² = 3221916116749128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 371583 + ... + 371690.

It is an arithmetic number, because the mean of its divisors is an integer number (5574555).

Almost surely, 2^40136742 is an apocalyptic number.

40136742 is an abundant number, since it is smaller than the sum of its proper divisors (49056138).

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

40136742 is a wasteful number, since it uses less digits than its factorization.

40136742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 743284 (or 743278 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 40136742 is about 6335.3565014133. The cubic root of 40136742 is about 342.3844553148.

Adding to 40136742 its reverse (24763104), we get a palindrome (64899846).

The spelling of 40136742 in words is "forty million, one hundred thirty-six thousand, seven hundred forty-two".