123544541 has 2 divisors, whose sum is σ = 123544542. Its totient is φ = 123544540.

The previous prime is 123544507. The next prime is 123544567. The reversal of 123544541 is 145445321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121992025 + 1552516 = 11045^2 + 1246^2 .

It is a cyclic number.

It is not a de Polignac number, because 123544541 - 2²⁶ = 56435677 is a prime.

It is a super-2 number, since 2×123544541² = 30526507221801362, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123544501) 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, 61772270 + 61772271.

It is an arithmetic number, because the mean of its divisors is an integer number (61772271).

Almost surely, 2^123544541 is an apocalyptic number.

It is an amenable number.

123544541 is a deficient number, since it is larger than the sum of its proper divisors (1).

123544541 is an equidigital number, since it uses as much as digits as its factorization.

123544541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9600, while the sum is 29.

The square root of 123544541 is about 11115.0591991226. The cubic root of 123544541 is about 498.0518069467.

Adding to 123544541 its reverse (145445321), we get a palindrome (268989862).

The spelling of 123544541 in words is "one hundred twenty-three million, five hundred forty-four thousand, five hundred forty-one".