742007139391 has 4 divisors (see below), whose sum is σ = 848008159312. Its totient is φ = 636006119472.

The previous prime is 742007139389. The next prime is 742007139409. The reversal of 742007139391 is 193931700247.

742007139391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 742007139391 - 2¹ = 742007139389 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 (742007139331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53000509950 + ... + 53000509963.

It is an arithmetic number, because the mean of its divisors is an integer number (212002039828).

Almost surely, 2^742007139391 is an apocalyptic number.

742007139391 is a deficient number, since it is larger than the sum of its proper divisors (106001019921).

742007139391 is a wasteful number, since it uses less digits than its factorization.

742007139391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106001019920.

The product of its (nonzero) digits is 285768, while the sum is 46.

The spelling of 742007139391 in words is "seven hundred forty-two billion, seven million, one hundred thirty-nine thousand, three hundred ninety-one".