40104421 has 32 divisors (see below), whose sum is σ = 50872320. Its totient is φ = 30844800.

The previous prime is 40104397. The next prime is 40104431. The reversal of 40104421 is 12440104.

It is not a de Polignac number, because 40104421 - 2⁹ = 40103909 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40104395 and 40104404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40104431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 292665 + ... + 292801.

It is an arithmetic number, because the mean of its divisors is an integer number (1589760).

Almost surely, 2^40104421 is an apocalyptic number.

It is an amenable number.

40104421 is a deficient number, since it is larger than the sum of its proper divisors (10767899).

40104421 is a wasteful number, since it uses less digits than its factorization.

40104421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 40104421 is about 6332.8051446417. The cubic root of 40104421 is about 342.2925264138.

Adding to 40104421 its reverse (12440104), we get a palindrome (52544525).

The spelling of 40104421 in words is "forty million, one hundred four thousand, four hundred twenty-one".