1442873149 has 2 divisors, whose sum is σ = 1442873150. Its totient is φ = 1442873148.

The previous prime is 1442873123. The next prime is 1442873161. The reversal of 1442873149 is 9413782441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1389947524 + 52925625 = 37282^2 + 7275^2 .

It is a cyclic number.

It is not a de Polignac number, because 1442873149 - 2²¹ = 1440775997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1442873119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721436574 + 721436575.

It is an arithmetic number, because the mean of its divisors is an integer number (721436575).

Almost surely, 2^1442873149 is an apocalyptic number.

It is an amenable number.

1442873149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1442873149 is an equidigital number, since it uses as much as digits as its factorization.

1442873149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 43.

The square root of 1442873149 is about 37985.1701194032. The cubic root of 1442873149 is about 1129.9937736885.

The spelling of 1442873149 in words is "one billion, four hundred forty-two million, eight hundred seventy-three thousand, one hundred forty-nine".