99742541 has 2 divisors, whose sum is σ = 99742542. Its totient is φ = 99742540.

The previous prime is 99742529. The next prime is 99742613. The reversal of 99742541 is 14524799.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54449641 + 45292900 = 7379^2 + 6730^2 .

It is a cyclic number.

It is not a de Polignac number, because 99742541 - 2²⁶ = 32633677 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99742141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49871270 + 49871271.

It is an arithmetic number, because the mean of its divisors is an integer number (49871271).

Almost surely, 2^99742541 is an apocalyptic number.

It is an amenable number.

99742541 is a deficient number, since it is larger than the sum of its proper divisors (1).

99742541 is an equidigital number, since it uses as much as digits as its factorization.

99742541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 41.

The square root of 99742541 is about 9987.1187536747. The cubic root of 99742541 is about 463.7602014112.

The spelling of 99742541 in words is "ninety-nine million, seven hundred forty-two thousand, five hundred forty-one".