1404041421 has 4 divisors (see below), whose sum is σ = 1872055232. Its totient is φ = 936027612.

The previous prime is 1404041411. The next prime is 1404041437. The reversal of 1404041421 is 1241404041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1241404041 = 3 ⋅413801347.

It is not a de Polignac number, because 1404041421 - 2⁵ = 1404041389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1404041411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234006901 + ... + 234006906.

It is an arithmetic number, because the mean of its divisors is an integer number (468013808).

Almost surely, 2^1404041421 is an apocalyptic number.

It is an amenable number.

1404041421 is a deficient number, since it is larger than the sum of its proper divisors (468013811).

1404041421 is an equidigital number, since it uses as much as digits as its factorization.

1404041421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468013810.

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 1404041421 is about 37470.5407086687. The cubic root of 1404041421 is about 1119.7643586423.

Adding to 1404041421 its reverse (1241404041), we get a palindrome (2645445462).

The spelling of 1404041421 in words is "one billion, four hundred four million, forty-one thousand, four hundred twenty-one".