75542743 has 2 divisors, whose sum is σ = 75542744. Its totient is φ = 75542742.

The previous prime is 75542737. The next prime is 75542773. The reversal of 75542743 is 34724557.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 75542743 - 2¹³ = 75534551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75542773) 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, 37771371 + 37771372.

It is an arithmetic number, because the mean of its divisors is an integer number (37771372).

Almost surely, 2^75542743 is an apocalyptic number.

75542743 is a deficient number, since it is larger than the sum of its proper divisors (1).

75542743 is an equidigital number, since it uses as much as digits as its factorization.

75542743 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 117600, while the sum is 37.

The square root of 75542743 is about 8691.5328337411. The cubic root of 75542743 is about 422.7311490313.

The spelling of 75542743 in words is "seventy-five million, five hundred forty-two thousand, seven hundred forty-three".