40542400 has 42 divisors (see below), whose sum is σ = 99763580. Its totient is φ = 16216320.

The previous prime is 40542379. The next prime is 40542401. The reversal of 40542400 is 424504.

It is not an unprimeable number, because it can be changed into a prime (40542401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11070 + ... + 14269.

Almost surely, 2^40542400 is an apocalyptic number.

40542400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40542400 is an abundant number, since it is smaller than the sum of its proper divisors (59221180).

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

40542400 is a wasteful number, since it uses less digits than its factorization.

40542400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25361 (or 25346 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 40542400 is about 6367.2914178636. The cubic root of 40542400 is about 343.5340726576.

Adding to 40542400 its reverse (424504), we get a palindrome (40966904).

The spelling of 40542400 in words is "forty million, five hundred forty-two thousand, four hundred".