40135424 has 36 divisors (see below), whose sum is σ = 91563024. Its totient is φ = 17200128.

The previous prime is 40135423. The next prime is 40135427. The reversal of 40135424 is 42453104.

It is a super-2 number, since 2×40135424² = 3221704519319552, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40135424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40135423) 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, 9407 + ... + 12990.

Almost surely, 2^40135424 is an apocalyptic number.

It is an amenable number.

40135424 is an abundant number, since it is smaller than the sum of its proper divisors (51427600).

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

40135424 is an equidigital number, since it uses as much as digits as its factorization.

40135424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22420 (or 22406 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 40135424 is about 6335.2524811565. The cubic root of 40135424 is about 342.3807075629.

Adding to 40135424 its reverse (42453104), we get a palindrome (82588528).

The spelling of 40135424 in words is "forty million, one hundred thirty-five thousand, four hundred twenty-four".