742006247 has 4 divisors (see below), whose sum is σ = 742116120. Its totient is φ = 741896376.

The previous prime is 742006241. The next prime is 742006301. The reversal of 742006247 is 742600247.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 742006247 - 2⁴ = 742006231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742006241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44093 + ... + 58550.

It is an arithmetic number, because the mean of its divisors is an integer number (185529030).

Almost surely, 2^742006247 is an apocalyptic number.

742006247 is a deficient number, since it is larger than the sum of its proper divisors (109873).

742006247 is a wasteful number, since it uses less digits than its factorization.

742006247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109872.

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 742006247 is about 27239.7916108035. The cubic root of 742006247 is about 905.3208459160.

The spelling of 742006247 in words is "seven hundred forty-two million, six thousand, two hundred forty-seven".