74243234247 has 64 divisors (see below), whose sum is σ = 122466914304. Its totient is φ = 38958796800.

The previous prime is 74243234137. The next prime is 74243234279.

It is a happy number.

74243234247 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 74243234247 - 2¹⁵ = 74243201479 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74243234199 and 74243234208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74243234287) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 61817247 + ... + 61818447.

It is an arithmetic number, because the mean of its divisors is an integer number (1913545536).

Almost surely, 2^74243234247 is an apocalyptic number.

74243234247 is a deficient number, since it is larger than the sum of its proper divisors (48223680057).

74243234247 is a wasteful number, since it uses less digits than its factorization.

74243234247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2208.

The product of its digits is 903168, while the sum is 42.

The spelling of 74243234247 in words is "seventy-four billion, two hundred forty-three million, two hundred thirty-four thousand, two hundred forty-seven".