1040104421 has 4 divisors (see below), whose sum is σ = 1101287052. Its totient is φ = 978921792.

The previous prime is 1040104399. The next prime is 1040104531. The reversal of 1040104421 is 1244010401.

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 843263521 + 196840900 = 29039^2 + 14030^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1040104421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 61182613 = 1040104421 / (1 + 0 + 4 + 0 + 1 + 0 + 4 + 4 + 2 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1040104421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040104621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30591290 + ... + 30591323.

It is an arithmetic number, because the mean of its divisors is an integer number (275321763).

Almost surely, 2^1040104421 is an apocalyptic number.

It is an amenable number.

1040104421 is a deficient number, since it is larger than the sum of its proper divisors (61182631).

1040104421 is an equidigital number, since it uses as much as digits as its factorization.

1040104421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61182630.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1040104421 is about 32250.6499314355. The cubic root of 1040104421 is about 1013.1933113771.

Adding to 1040104421 its reverse (1244010401), we get a palindrome (2284114822).

The spelling of 1040104421 in words is "one billion, forty million, one hundred four thousand, four hundred twenty-one".