1442172727 has 2 divisors, whose sum is σ = 1442172728. Its totient is φ = 1442172726.

The previous prime is 1442172691. The next prime is 1442172737. The reversal of 1442172727 is 7272712441.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1442172727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1442172737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721086363 + 721086364.

It is an arithmetic number, because the mean of its divisors is an integer number (721086364).

Almost surely, 2^1442172727 is an apocalyptic number.

1442172727 is a deficient number, since it is larger than the sum of its proper divisors (1).

1442172727 is an equidigital number, since it uses as much as digits as its factorization.

1442172727 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43904, while the sum is 37.

The square root of 1442172727 is about 37975.9493232230. The cubic root of 1442172727 is about 1129.8108976901.

The spelling of 1442172727 in words is "one billion, four hundred forty-two million, one hundred seventy-two thousand, seven hundred twenty-seven".