1404610421 has 2 divisors, whose sum is σ = 1404610422. Its totient is φ = 1404610420.

The previous prime is 1404610381. The next prime is 1404610433. The reversal of 1404610421 is 1240164041.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1232712100 + 171898321 = 35110^2 + 13111^2 .

It is a cyclic number.

It is not a de Polignac number, because 1404610421 - 2⁶ = 1404610357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1404610451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 702305210 + 702305211.

It is an arithmetic number, because the mean of its divisors is an integer number (702305211).

Almost surely, 2^1404610421 is an apocalyptic number.

It is an amenable number.

1404610421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1404610421 is an equidigital number, since it uses as much as digits as its factorization.

1404610421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 1404610421 is about 37478.1325708739. The cubic root of 1404610421 is about 1119.9156029623.

Adding to 1404610421 its reverse (1240164041), we get a palindrome (2644774462).

The spelling of 1404610421 in words is "one billion, four hundred four million, six hundred ten thousand, four hundred twenty-one".