1442269921 has 2 divisors, whose sum is σ = 1442269922. Its totient is φ = 1442269920.

The previous prime is 1442269903. The next prime is 1442269937. The reversal of 1442269921 is 1299622441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1358291025 + 83978896 = 36855^2 + 9164^2 .

It is a cyclic number.

It is not a de Polignac number, because 1442269921 - 2²⁹ = 905399009 is a prime.

It is not a weakly prime, because it can be changed into another prime (1442269951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721134960 + 721134961.

It is an arithmetic number, because the mean of its divisors is an integer number (721134961).

Almost surely, 2^1442269921 is an apocalyptic number.

It is an amenable number.

1442269921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1442269921 is an equidigital number, since it uses as much as digits as its factorization.

1442269921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 40.

The square root of 1442269921 is about 37977.2289800085. The cubic root of 1442269921 is about 1129.8362780003.

The spelling of 1442269921 in words is "one billion, four hundred forty-two million, two hundred sixty-nine thousand, nine hundred twenty-one".