742003861 has 2 divisors, whose sum is σ = 742003862. Its totient is φ = 742003860.

The previous prime is 742003819. The next prime is 742003877. The reversal of 742003861 is 168300247.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 492174225 + 249829636 = 22185^2 + 15806^2 .

It is an emirp because it is prime and its reverse (168300247) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-742003861 is a prime.

742003861 is a modest number, since divided by 3861 gives 742 as remainder.

It is equal to p_38312365 and since 742003861 and 38312365 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (742003961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371001930 + 371001931.

It is an arithmetic number, because the mean of its divisors is an integer number (371001931).

Almost surely, 2^742003861 is an apocalyptic number.

It is an amenable number.

742003861 is a deficient number, since it is larger than the sum of its proper divisors (1).

742003861 is an equidigital number, since it uses as much as digits as its factorization.

742003861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 742003861 is about 27239.7478145448. The cubic root of 742003861 is about 905.3198755299.

The spelling of 742003861 in words is "seven hundred forty-two million, three thousand, eight hundred sixty-one".