40054040 has 128 divisors (see below), whose sum is σ = 107775360. Its totient is φ = 13246464.

The previous prime is 40054039. The next prime is 40054043. The reversal of 40054040 is 4045004.

It is a super-2 number, since 2×40054040² = 3208652240643200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40054043) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 203222 + ... + 203418.

It is an arithmetic number, because the mean of its divisors is an integer number (841995).

Almost surely, 2^40054040 is an apocalyptic number.

40054040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40054040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53887680).

40054040 is an abundant number, since it is smaller than the sum of its proper divisors (67721320).

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

40054040 is a wasteful number, since it uses less digits than its factorization.

40054040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 40054040 is about 6328.8261154814. The cubic root of 40054040 is about 342.1491318643.

Adding to 40054040 its reverse (4045004), we get a palindrome (44099044).

The spelling of 40054040 in words is "forty million, fifty-four thousand, forty", and thus it is an eban number.