99042541 has 4 divisors (see below), whose sum is σ = 106661212. Its totient is φ = 91423872.

The previous prime is 99042539. The next prime is 99042547. The reversal of 99042541 is 14524099.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14524099 = 29 ⋅500831.

It can be written as a sum of positive squares in 2 ways, for example, as 43837641 + 55204900 = 6621^2 + 7430^2 .

It is a cyclic number.

It is not a de Polignac number, because 99042541 - 2¹ = 99042539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99042497 and 99042506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99042547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3809316 + ... + 3809341.

It is an arithmetic number, because the mean of its divisors is an integer number (26665303).

Almost surely, 2^99042541 is an apocalyptic number.

It is an amenable number.

99042541 is a deficient number, since it is larger than the sum of its proper divisors (7618671).

99042541 is a wasteful number, since it uses less digits than its factorization.

99042541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7618670.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 99042541 is about 9952.0119071472. The cubic root of 99042541 is about 462.6727531910.

The spelling of 99042541 in words is "ninety-nine million, forty-two thousand, five hundred forty-one".