73042427 has 6 divisors (see below), whose sum is σ = 74449452. Its totient is φ = 71661512.

The previous prime is 73042379. The next prime is 73042429. The reversal of 73042427 is 72424037.

It is not a de Polignac number, because 73042427 - 2⁶ = 73042363 is a prime.

It is a super-2 number, since 2×73042427² = 10670392284100658, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73042427.

It is not an unprimeable number, because it can be changed into a prime (73042429) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10193 + ... + 15810.

It is an arithmetic number, because the mean of its divisors is an integer number (12408242).

Almost surely, 2^73042427 is an apocalyptic number.

73042427 is a deficient number, since it is larger than the sum of its proper divisors (1407025).

73042427 is an equidigital number, since it uses as much as digits as its factorization.

73042427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26109 (or 26056 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 29.

The square root of 73042427 is about 8546.4862370450. The cubic root of 73042427 is about 418.0148705438.

The spelling of 73042427 in words is "seventy-three million, forty-two thousand, four hundred twenty-seven".