742107127391 has 4 divisors (see below), whose sum is σ = 848122431312. Its totient is φ = 636091823472.

The previous prime is 742107127381. The next prime is 742107127423. The reversal of 742107127391 is 193721701247.

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

It is a de Polignac number, because none of the positive numbers 2^k-742107127391 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 (742107127301) 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 3 ways as a sum of consecutive naturals, for example, 53007651950 + ... + 53007651963.

It is an arithmetic number, because the mean of its divisors is an integer number (212030607828).

Almost surely, 2^742107127391 is an apocalyptic number.

742107127391 is a deficient number, since it is larger than the sum of its proper divisors (106015303921).

742107127391 is a wasteful number, since it uses less digits than its factorization.

742107127391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106015303920.

The product of its (nonzero) digits is 148176, while the sum is 44.

The spelling of 742107127391 in words is "seven hundred forty-two billion, one hundred seven million, one hundred twenty-seven thousand, three hundred ninety-one".