1442342281 has 2 divisors, whose sum is σ = 1442342282. Its totient is φ = 1442342280.

The previous prime is 1442342243. The next prime is 1442342303. The reversal of 1442342281 is 1822432441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 862303225 + 580039056 = 29365^2 + 24084^2 .

It is a cyclic number.

It is not a de Polignac number, because 1442342281 - 2²⁷ = 1308124553 is a prime.

It is a super-2 number, since 2×1442342281² = 4160702511120565922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1442342221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721171140 + 721171141.

It is an arithmetic number, because the mean of its divisors is an integer number (721171141).

Almost surely, 2^1442342281 is an apocalyptic number.

It is an amenable number.

1442342281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1442342281 is an equidigital number, since it uses as much as digits as its factorization.

1442342281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12288, while the sum is 31.

The square root of 1442342281 is about 37978.1816442020. The cubic root of 1442342281 is about 1129.8551726572.

The spelling of 1442342281 in words is "one billion, four hundred forty-two million, three hundred forty-two thousand, two hundred eighty-one".