1442007557 has 2 divisors, whose sum is σ = 1442007558. Its totient is φ = 1442007556.

The previous prime is 1442007499. The next prime is 1442007583. The reversal of 1442007557 is 7557002441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1327217761 + 114789796 = 36431^2 + 10714^2 .

It is a cyclic number.

It is not a de Polignac number, because 1442007557 - 2¹⁸ = 1441745413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1442007257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721003778 + 721003779.

It is an arithmetic number, because the mean of its divisors is an integer number (721003779).

Almost surely, 2^1442007557 is an apocalyptic number.

It is an amenable number.

1442007557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1442007557 is an equidigital number, since it uses as much as digits as its factorization.

1442007557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39200, while the sum is 35.

The square root of 1442007557 is about 37973.7745951071. The cubic root of 1442007557 is about 1129.7677641627.

Adding to 1442007557 its reverse (7557002441), we get a palindrome (8999009998).

The spelling of 1442007557 in words is "one billion, four hundred forty-two million, seven thousand, five hundred fifty-seven".