1442555641 has 2 divisors, whose sum is σ = 1442555642. Its totient is φ = 1442555640.

The previous prime is 1442555623. The next prime is 1442555651. The reversal of 1442555641 is 1465552441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 865595241 + 576960400 = 29421^2 + 24020^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1442555641 is a prime.

It is a super-3 number, since 3×1442555641³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1442555641.

It is not a weakly prime, because it can be changed into another prime (1442555651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721277820 + 721277821.

It is an arithmetic number, because the mean of its divisors is an integer number (721277821).

Almost surely, 2^1442555641 is an apocalyptic number.

It is an amenable number.

1442555641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1442555641 is an equidigital number, since it uses as much as digits as its factorization.

1442555641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96000, while the sum is 37.

The square root of 1442555641 is about 37980.9905215754. The cubic root of 1442555641 is about 1129.9108815822.

The spelling of 1442555641 in words is "one billion, four hundred forty-two million, five hundred fifty-five thousand, six hundred forty-one".