742136631247 has 4 divisors (see below), whose sum is σ = 809603597736. Its totient is φ = 674669664760.

The previous prime is 742136631227. The next prime is 742136631259.

It is a happy number.

742136631247 is nontrivially palindromic in base 10.

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 742136631247 - 2²⁷ = 742002413519 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 742136631197 and 742136631206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742136631227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33733483228 + ... + 33733483249.

It is an arithmetic number, because the mean of its divisors is an integer number (202400899434).

Almost surely, 2^742136631247 is an apocalyptic number.

742136631247 is a deficient number, since it is larger than the sum of its proper divisors (67466966489).

742136631247 is a wasteful number, since it uses less digits than its factorization.

742136631247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67466966488.

The product of its digits is 1016064, while the sum is 46.

The spelling of 742136631247 in words is "seven hundred forty-two billion, one hundred thirty-six million, six hundred thirty-one thousand, two hundred forty-seven".