74240243 has 12 divisors (see below), whose sum is σ = 94212792. Its totient is φ = 57849120.

The previous prime is 74240219. The next prime is 74240267. The reversal of 74240243 is 34204247.

It is an interprime number because it is at equal distance from previous prime (74240219) and next prime (74240267).

It is not a de Polignac number, because 74240243 - 2¹⁰ = 74239219 is a prime.

It is a super-2 number, since 2×74240243² = 11023227361398098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74240273) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68330 + ... + 69407.

It is an arithmetic number, because the mean of its divisors is an integer number (7851066).

Almost surely, 2^74240243 is an apocalyptic number.

74240243 is a deficient number, since it is larger than the sum of its proper divisors (19972549).

74240243 is a wasteful number, since it uses less digits than its factorization.

74240243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137762 (or 137755 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 26.

The square root of 74240243 is about 8616.2777926434. The cubic root of 74240243 is about 420.2874883556.

The spelling of 74240243 in words is "seventy-four million, two hundred forty thousand, two hundred forty-three".