742899991 has 2 divisors, whose sum is σ = 742899992. Its totient is φ = 742899990.

The previous prime is 742899973. The next prime is 742900009. The reversal of 742899991 is 199998247.

It is a balanced prime because it is at equal distance from previous prime (742899973) and next prime (742900009).

It is an emirp because it is prime and its reverse (199998247) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 742899991 - 2⁵ = 742899959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (742899191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371449995 + 371449996.

It is an arithmetic number, because the mean of its divisors is an integer number (371449996).

Almost surely, 2^742899991 is an apocalyptic number.

742899991 is a deficient number, since it is larger than the sum of its proper divisors (1).

742899991 is an equidigital number, since it uses as much as digits as its factorization.

742899991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2939328, while the sum is 58.

The square root of 742899991 is about 27256.1917919580. The cubic root of 742899991 is about 905.6841853676.

The spelling of 742899991 in words is "seven hundred forty-two million, eight hundred ninety-nine thousand, nine hundred ninety-one".