1421455441 has 8 divisors (see below), whose sum is σ = 1631616320. Its totient is φ = 1213068528.

The previous prime is 1421455439. The next prime is 1421455447. The reversal of 1421455441 is 1445541241.

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

It is not a de Polignac number, because 1421455441 - 2¹ = 1421455439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1421455447) 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, 441771 + ... + 444976.

It is an arithmetic number, because the mean of its divisors is an integer number (203952040).

Almost surely, 2^1421455441 is an apocalyptic number.

It is an amenable number.

1421455441 is a deficient number, since it is larger than the sum of its proper divisors (210160879).

1421455441 is an equidigital number, since it uses as much as digits as its factorization.

1421455441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886983.

The product of its digits is 12800, while the sum is 31.

The square root of 1421455441 is about 37702.1941138709. The cubic root of 1421455441 is about 1124.3747481343.

Adding to 1421455441 its reverse (1445541241), we get a palindrome (2866996682).

The spelling of 1421455441 in words is "one billion, four hundred twenty-one million, four hundred fifty-five thousand, four hundred forty-one".