740238121387 has 4 divisors (see below), whose sum is σ = 764116770496. Its totient is φ = 716359472280.

The previous prime is 740238121373. The next prime is 740238121391. The reversal of 740238121387 is 783121832047.

740238121387 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 a de Polignac number, because none of the positive numbers 2^k-740238121387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (740238121687) 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, 11939324508 + ... + 11939324569.

It is an arithmetic number, because the mean of its divisors is an integer number (191029192624).

Almost surely, 2^740238121387 is an apocalyptic number.

740238121387 is a deficient number, since it is larger than the sum of its proper divisors (23878649109).

740238121387 is a wasteful number, since it uses less digits than its factorization.

740238121387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23878649108.

The product of its (nonzero) digits is 451584, while the sum is 46.

The spelling of 740238121387 in words is "seven hundred forty billion, two hundred thirty-eight million, one hundred twenty-one thousand, three hundred eighty-seven".