73442423 has 2 divisors, whose sum is σ = 73442424. Its totient is φ = 73442422.

The previous prime is 73442419. The next prime is 73442437. The reversal of 73442423 is 32424437.

It is a weak prime.

It is an emirp because it is prime and its reverse (32424437) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73442423 - 2² = 73442419 is a prime.

It is a super-2 number, since 2×73442423² = 10787578992221858, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73442443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36721211 + 36721212.

It is an arithmetic number, because the mean of its divisors is an integer number (36721212).

Almost surely, 2^73442423 is an apocalyptic number.

73442423 is a deficient number, since it is larger than the sum of its proper divisors (1).

73442423 is an equidigital number, since it uses as much as digits as its factorization.

73442423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 29.

The square root of 73442423 is about 8569.8554830289. The cubic root of 73442423 is about 418.7765282666.

The spelling of 73442423 in words is "seventy-three million, four hundred forty-two thousand, four hundred twenty-three".