1421632241 has 8 divisors (see below), whose sum is σ = 1462483200. Its totient is φ = 1380909168.

The previous prime is 1421632213. The next prime is 1421632253. The reversal of 1421632241 is 1422361241.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1421632241 is a prime.

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 1421632241.

It is not an unprimeable number, because it can be changed into a prime (1421632271) 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, 9191 + ... + 54108.

It is an arithmetic number, because the mean of its divisors is an integer number (182810400).

Almost surely, 2^1421632241 is an apocalyptic number.

It is an amenable number.

1421632241 is a deficient number, since it is larger than the sum of its proper divisors (40850959).

1421632241 is an equidigital number, since it uses as much as digits as its factorization.

1421632241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63943.

The product of its digits is 2304, while the sum is 26.

The square root of 1421632241 is about 37704.5387320943. The cubic root of 1421632241 is about 1124.4213626132.

Adding to 1421632241 its reverse (1422361241), we get a palindrome (2843993482).

Subtracting 1421632241 from its reverse (1422361241), we obtain a cube (729000 = 90³).

The spelling of 1421632241 in words is "one billion, four hundred twenty-one million, six hundred thirty-two thousand, two hundred forty-one".