742844231 has 2 divisors, whose sum is σ = 742844232. Its totient is φ = 742844230.

The previous prime is 742844171. The next prime is 742844281. The reversal of 742844231 is 132448247.

It is a strong prime.

It is an emirp because it is prime and its reverse (132448247) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-742844231 is a prime.

It is a super-2 number, since 2×742844231² = 1103635103059962722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 742844191 and 742844200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (742844281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371422115 + 371422116.

It is an arithmetic number, because the mean of its divisors is an integer number (371422116).

Almost surely, 2^742844231 is an apocalyptic number.

742844231 is a deficient number, since it is larger than the sum of its proper divisors (1).

742844231 is an equidigital number, since it uses as much as digits as its factorization.

742844231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43008, while the sum is 35.

The square root of 742844231 is about 27255.1688859196. The cubic root of 742844231 is about 905.6615254249.

The spelling of 742844231 in words is "seven hundred forty-two million, eight hundred forty-four thousand, two hundred thirty-one".