40135542 has 8 divisors (see below), whose sum is σ = 80271096. Its totient is φ = 13378512.

The previous prime is 40135523. The next prime is 40135547. The reversal of 40135542 is 24553104.

It is a sphenic number, since it is the product of 3 distinct primes.

40135542 is an admirable number.

It is a super-2 number, since 2×40135542² = 3221723463267528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40135547) 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, 3344623 + ... + 3344634.

It is an arithmetic number, because the mean of its divisors is an integer number (10033887).

Almost surely, 2^40135542 is an apocalyptic number.

40135542 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

40135542 is a wasteful number, since it uses less digits than its factorization.

40135542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6689262.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 40135542 is about 6335.2617941171. The cubic root of 40135542 is about 342.3810431010.

Adding to 40135542 its reverse (24553104), we get a palindrome (64688646).

The spelling of 40135542 in words is "forty million, one hundred thirty-five thousand, five hundred forty-two".