75042943 has 2 divisors, whose sum is σ = 75042944. Its totient is φ = 75042942.

The previous prime is 75042917. The next prime is 75042949. The reversal of 75042943 is 34924057.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 75042943 - 2¹⁷ = 74911871 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 75042899 and 75042908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75042949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37521471 + 37521472.

It is an arithmetic number, because the mean of its divisors is an integer number (37521472).

Almost surely, 2^75042943 is an apocalyptic number.

75042943 is a deficient number, since it is larger than the sum of its proper divisors (1).

75042943 is an equidigital number, since it uses as much as digits as its factorization.

75042943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 75042943 is about 8662.7329983095. The cubic root of 75042943 is about 421.7968051361.

The spelling of 75042943 in words is "seventy-five million, forty-two thousand, nine hundred forty-three".