74342291 has 2 divisors, whose sum is σ = 74342292. Its totient is φ = 74342290.

The previous prime is 74342189. The next prime is 74342299. The reversal of 74342291 is 19224347.

It is a strong prime.

It is an emirp because it is prime and its reverse (19224347) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74342291 is a prime.

It is a super-2 number, since 2×74342291² = 11053552462257362, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74342299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37171145 + 37171146.

It is an arithmetic number, because the mean of its divisors is an integer number (37171146).

Almost surely, 2^74342291 is an apocalyptic number.

74342291 is a deficient number, since it is larger than the sum of its proper divisors (1).

74342291 is an equidigital number, since it uses as much as digits as its factorization.

74342291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 32.

The square root of 74342291 is about 8622.1975737047. The cubic root of 74342291 is about 420.4799709384.

It can be divided in two parts, 743 and 42291, that added together give a palindrome (43034).

The spelling of 74342291 in words is "seventy-four million, three hundred forty-two thousand, two hundred ninety-one".