73730143 has 2 divisors, whose sum is σ = 73730144. Its totient is φ = 73730142.

The previous prime is 73730141. The next prime is 73730171. The reversal of 73730143 is 34103737.

It is an a-pointer prime, because the next prime (73730171) can be obtained adding 73730143 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 73730143 - 2¹ = 73730141 is a prime.

It is a super-2 number, since 2×73730143² = 10872267973600898, which contains 22 as substring.

Together with 73730141, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73730141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36865071 + 36865072.

It is an arithmetic number, because the mean of its divisors is an integer number (36865072).

Almost surely, 2^73730143 is an apocalyptic number.

73730143 is a deficient number, since it is larger than the sum of its proper divisors (1).

73730143 is an equidigital number, since it uses as much as digits as its factorization.

73730143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5292, while the sum is 28.

The square root of 73730143 is about 8586.6258215902. The cubic root of 73730143 is about 419.3226857140.

The spelling of 73730143 in words is "seventy-three million, seven hundred thirty thousand, one hundred forty-three".