742749437 has 4 divisors (see below), whose sum is σ = 742846080. Its totient is φ = 742652796.

The previous prime is 742749383. The next prime is 742749439. The reversal of 742749437 is 734947247.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 742749437 - 2²⁶ = 675640573 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 742749391 and 742749400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742749439) 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, 35693 + ... + 52530.

It is an arithmetic number, because the mean of its divisors is an integer number (185711520).

Almost surely, 2^742749437 is an apocalyptic number.

It is an amenable number.

742749437 is a deficient number, since it is larger than the sum of its proper divisors (96643).

742749437 is an equidigital number, since it uses as much as digits as its factorization.

742749437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96642.

The product of its digits is 1185408, while the sum is 47.

The square root of 742749437 is about 27253.4298208501. The cubic root of 742749437 is about 905.6230001069.

The spelling of 742749437 in words is "seven hundred forty-two million, seven hundred forty-nine thousand, four hundred thirty-seven".