40454442 has 48 divisors (see below), whose sum is σ = 103414272. Its totient is φ = 11184480.

The previous prime is 40454437. The next prime is 40454497. The reversal of 40454442 is 24445404.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1273 + ... + 9084.

It is an arithmetic number, because the mean of its divisors is an integer number (2154464).

Almost surely, 2^40454442 is an apocalyptic number.

40454442 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

40454442 is an abundant number, since it is smaller than the sum of its proper divisors (62959830).

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

40454442 is a wasteful number, since it uses less digits than its factorization.

40454442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10403 (or 10400 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 27.

The square root of 40454442 is about 6360.3806489863. The cubic root of 40454442 is about 343.2854568195.

Adding to 40454442 its reverse (24445404), we get a palindrome (64899846).

The spelling of 40454442 in words is "forty million, four hundred fifty-four thousand, four hundred forty-two".