40054821 has 8 divisors (see below), whose sum is σ = 55129344. Its totient is φ = 25841760.

The previous prime is 40054789. The next prime is 40054823. The reversal of 40054821 is 12845004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40054821 - 2⁵ = 40054789 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40054791 and 40054800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40054823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215256 + ... + 215441.

It is an arithmetic number, because the mean of its divisors is an integer number (6891168).

Almost surely, 2^40054821 is an apocalyptic number.

It is an amenable number.

40054821 is a deficient number, since it is larger than the sum of its proper divisors (15074523).

40054821 is a wasteful number, since it uses less digits than its factorization.

40054821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430731.

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 40054821 is about 6328.8878169865. The cubic root of 40054821 is about 342.1513556661.

Adding to 40054821 its reverse (12845004), we get a palindrome (52899825).

The spelling of 40054821 in words is "forty million, fifty-four thousand, eight hundred twenty-one".