73117141 has 4 divisors (see below), whose sum is σ = 73488492. Its totient is φ = 72745792.

The previous prime is 73117139. The next prime is 73117147. The reversal of 73117141 is 14171137.

73117141 = 219² + 220² + ... + 612².

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14171137 = 1123 ⋅12619.

It can be written as a sum of positive squares in 2 ways, for example, as 71334916 + 1782225 = 8446^2 + 1335^2 .

It is a cyclic number.

It is not a de Polignac number, because 73117141 - 2¹ = 73117139 is a prime.

It is a super-2 number, since 2×73117141² = 10692232616027762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73117147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185380 + ... + 185773.

It is an arithmetic number, because the mean of its divisors is an integer number (18372123).

Almost surely, 2^73117141 is an apocalyptic number.

It is an amenable number.

73117141 is a deficient number, since it is larger than the sum of its proper divisors (371351).

73117141 is a wasteful number, since it uses less digits than its factorization.

73117141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371350.

The product of its digits is 588, while the sum is 25.

The square root of 73117141 is about 8550.8561559647. The cubic root of 73117141 is about 418.1573490165.

Adding to 73117141 its reverse (14171137), we get a palindrome (87288278).

The spelling of 73117141 in words is "seventy-three million, one hundred seventeen thousand, one hundred forty-one".