1144210421 has 2 divisors, whose sum is σ = 1144210422. Its totient is φ = 1144210420.

The previous prime is 1144210391. The next prime is 1144210427. The reversal of 1144210421 is 1240124411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1123188196 + 21022225 = 33514^2 + 4585^2 .

It is a cyclic number.

It is not a de Polignac number, because 1144210421 - 2²² = 1140016117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1144210393 and 1144210402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1144210427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572105210 + 572105211.

It is an arithmetic number, because the mean of its divisors is an integer number (572105211).

Almost surely, 2^1144210421 is an apocalyptic number.

It is an amenable number.

1144210421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1144210421 is an equidigital number, since it uses as much as digits as its factorization.

1144210421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 1144210421 is about 33826.1795211933. The cubic root of 1144210421 is about 1045.9284259088.

Adding to 1144210421 its reverse (1240124411), we get a palindrome (2384334832).

The spelling of 1144210421 in words is "one billion, one hundred forty-four million, two hundred ten thousand, four hundred twenty-one".