40135452 has 48 divisors (see below), whose sum is σ = 110487552. Its totient is φ = 11096640.

The previous prime is 40135451. The next prime is 40135457. The reversal of 40135452 is 25453104.

It is a super-2 number, since 2×40135452² = 3221709014488608, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40135451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5103 + ... + 10310.

It is an arithmetic number, because the mean of its divisors is an integer number (2301824).

Almost surely, 2^40135452 is an apocalyptic number.

40135452 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

40135452 is an abundant number, since it is smaller than the sum of its proper divisors (70352100).

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

40135452 is a wasteful number, since it uses less digits than its factorization.

40135452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15458 (or 15456 counting only the distinct ones).

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

The square root of 40135452 is about 6335.2546910128. The cubic root of 40135452 is about 342.3807871822.

Adding to 40135452 its reverse (25453104), we get a palindrome (65588556).

It can be divided in two parts, 401 and 35452, that added together give a palindrome (35853).

The spelling of 40135452 in words is "forty million, one hundred thirty-five thousand, four hundred fifty-two".