742243678 has 16 divisors (see below), whose sum is σ = 1215296496. Its totient is φ = 337184640.

The previous prime is 742243639. The next prime is 742243679. The reversal of 742243678 is 876342247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742243679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32200 + ... + 50212.

It is an arithmetic number, because the mean of its divisors is an integer number (75956031).

Almost surely, 2^742243678 is an apocalyptic number.

742243678 is a deficient number, since it is larger than the sum of its proper divisors (473052818).

742243678 is a wasteful number, since it uses less digits than its factorization.

742243678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19899.

The product of its digits is 451584, while the sum is 43.

The square root of 742243678 is about 27244.1494269871. The cubic root of 742243678 is about 905.4173987019.

The spelling of 742243678 in words is "seven hundred forty-two million, two hundred forty-three thousand, six hundred seventy-eight".