742942919 has 4 divisors (see below), whose sum is σ = 761063520. Its totient is φ = 724822320.

The previous prime is 742942913. The next prime is 742942951. The reversal of 742942919 is 919249247.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 919249247 = 7 ⋅131321321.

It is a cyclic number.

It is not a de Polignac number, because 742942919 - 2⁴ = 742942903 is a prime.

It is a super-2 number, since 2×742942919² = 1103928361784481122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742942913) 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 in 3 ways as a sum of consecutive naturals, for example, 9060239 + ... + 9060320.

It is an arithmetic number, because the mean of its divisors is an integer number (190265880).

Almost surely, 2^742942919 is an apocalyptic number.

742942919 is a deficient number, since it is larger than the sum of its proper divisors (18120601).

742942919 is a wasteful number, since it uses less digits than its factorization.

742942919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18120600.

The product of its digits is 326592, while the sum is 47.

The square root of 742942919 is about 27256.9792713719. The cubic root of 742942919 is about 905.7016298251.

The spelling of 742942919 in words is "seven hundred forty-two million, nine hundred forty-two thousand, nine hundred nineteen".