1442142641 has 2 divisors, whose sum is σ = 1442142642. Its totient is φ = 1442142640.

The previous prime is 1442142601. The next prime is 1442142701. The reversal of 1442142641 is 1462412441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 987216400 + 454926241 = 31420^2 + 21329^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1442142641 is a prime.

It is not a weakly prime, because it can be changed into another prime (1442142601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721071320 + 721071321.

It is an arithmetic number, because the mean of its divisors is an integer number (721071321).

Almost surely, 2^1442142641 is an apocalyptic number.

It is an amenable number.

1442142641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1442142641 is an equidigital number, since it uses as much as digits as its factorization.

1442142641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6144, while the sum is 29.

The square root of 1442142641 is about 37975.5532020272. The cubic root of 1442142641 is about 1129.8030410891.

The spelling of 1442142641 in words is "one billion, four hundred forty-two million, one hundred forty-two thousand, six hundred forty-one".