73142543 has 2 divisors, whose sum is σ = 73142544. Its totient is φ = 73142542.

The previous prime is 73142539. The next prime is 73142557. The reversal of 73142543 is 34524137.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 73142543 - 2² = 73142539 is a prime.

It is equal to p_4291922 and since 73142543 and 4291922 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73142593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36571271 + 36571272.

It is an arithmetic number, because the mean of its divisors is an integer number (36571272).

Almost surely, 2^73142543 is an apocalyptic number.

73142543 is a deficient number, since it is larger than the sum of its proper divisors (1).

73142543 is an equidigital number, since it uses as much as digits as its factorization.

73142543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 29.

The square root of 73142543 is about 8552.3413753194. The cubic root of 73142543 is about 418.2057681377.

The spelling of 73142543 in words is "seventy-three million, one hundred forty-two thousand, five hundred forty-three".