40420441 has 4 divisors (see below), whose sum is σ = 42798132. Its totient is φ = 38042752.

The previous prime is 40420433. The next prime is 40420451. The reversal of 40420441 is 14402404.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15210000 + 25210441 = 3900^2 + 5021^2 .

It is a cyclic number.

It is not a de Polignac number, because 40420441 - 2³ = 40420433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40420411) 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 3 ways as a sum of consecutive naturals, for example, 1188820 + ... + 1188853.

It is an arithmetic number, because the mean of its divisors is an integer number (10699533).

Almost surely, 2^40420441 is an apocalyptic number.

It is an amenable number.

40420441 is a deficient number, since it is larger than the sum of its proper divisors (2377691).

40420441 is a wasteful number, since it uses less digits than its factorization.

40420441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2377690.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 40420441 is about 6357.7072125099. The cubic root of 40420441 is about 343.1892554318.

Adding to 40420441 its reverse (14402404), we get a palindrome (54822845).

The spelling of 40420441 in words is "forty million, four hundred twenty thousand, four hundred forty-one".