1421244001 has 2 divisors, whose sum is σ = 1421244002. Its totient is φ = 1421244000.

The previous prime is 1421243969. The next prime is 1421244031. The reversal of 1421244001 is 1004421241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 851180625 + 570063376 = 29175^2 + 23876^2 .

It is an emirp because it is prime and its reverse (1004421241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1421244001 - 2⁵ = 1421243969 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1421244001.

It is not a weakly prime, because it can be changed into another prime (1421244031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710622000 + 710622001.

It is an arithmetic number, because the mean of its divisors is an integer number (710622001).

Almost surely, 2^1421244001 is an apocalyptic number.

It is an amenable number.

1421244001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421244001 is an equidigital number, since it uses as much as digits as its factorization.

1421244001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1421244001 is about 37699.3899287508. The cubic root of 1421244001 is about 1124.3189955165.

Adding to 1421244001 its reverse (1004421241), we get a palindrome (2425665242).

The spelling of 1421244001 in words is "one billion, four hundred twenty-one million, two hundred forty-four thousand, one".