74857141 has 2 divisors, whose sum is σ = 74857142. Its totient is φ = 74857140.

The previous prime is 74857121. The next prime is 74857151. The reversal of 74857141 is 14175847.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66178225 + 8678916 = 8135^2 + 2946^2 .

It is a cyclic number.

It is not a de Polignac number, because 74857141 - 2⁹ = 74856629 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74857141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74857121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37428570 + 37428571.

It is an arithmetic number, because the mean of its divisors is an integer number (37428571).

Almost surely, 2^74857141 is an apocalyptic number.

It is an amenable number.

74857141 is a deficient number, since it is larger than the sum of its proper divisors (1).

74857141 is an equidigital number, since it uses as much as digits as its factorization.

74857141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31360, while the sum is 37.

The square root of 74857141 is about 8652.0021382337. The cubic root of 74857141 is about 421.4484025797.

Subtracting from 74857141 its sum of digits (37), we obtain a square (74857104 = 8652²).

The spelling of 74857141 in words is "seventy-four million, eight hundred fifty-seven thousand, one hundred forty-one".