742146643 has 4 divisors (see below), whose sum is σ = 848167600. Its totient is φ = 636125688.

The previous prime is 742146641. The next prime is 742146649. The reversal of 742146643 is 346641247.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 346641247 = 103 ⋅3365449.

It is a cyclic number.

It is not a de Polignac number, because 742146643 - 2¹ = 742146641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (742146641) 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, 53010468 + ... + 53010481.

It is an arithmetic number, because the mean of its divisors is an integer number (212041900).

Almost surely, 2^742146643 is an apocalyptic number.

742146643 is a deficient number, since it is larger than the sum of its proper divisors (106020957).

742146643 is a wasteful number, since it uses less digits than its factorization.

742146643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106020956.

The product of its digits is 96768, while the sum is 37.

The square root of 742146643 is about 27242.3685277180. The cubic root of 742146643 is about 905.3779413068.

The spelling of 742146643 in words is "seven hundred forty-two million, one hundred forty-six thousand, six hundred forty-three".