1442263021 has 2 divisors, whose sum is σ = 1442263022. Its totient is φ = 1442263020.

The previous prime is 1442262953. The next prime is 1442263033. The reversal of 1442263021 is 1203622441.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1418350921 + 23912100 = 37661^2 + 4890^2 .

It is a cyclic number.

It is not a de Polignac number, because 1442263021 - 2¹⁵ = 1442230253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1442263621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721131510 + 721131511.

It is an arithmetic number, because the mean of its divisors is an integer number (721131511).

Almost surely, 2^1442263021 is an apocalyptic number.

It is an amenable number.

1442263021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1442263021 is an equidigital number, since it uses as much as digits as its factorization.

1442263021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 1442263021 is about 37977.1381359891. The cubic root of 1442263021 is about 1129.8344762380.

Adding to 1442263021 its reverse (1203622441), we get a palindrome (2645885462).

The spelling of 1442263021 in words is "one billion, four hundred forty-two million, two hundred sixty-three thousand, twenty-one".