123204541 has 2 divisors, whose sum is σ = 123204542. Its totient is φ = 123204540.

The previous prime is 123204539. The next prime is 123204617. The reversal of 123204541 is 145402321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65124900 + 58079641 = 8070^2 + 7621^2 .

It is a cyclic number.

It is not a de Polignac number, because 123204541 - 2¹ = 123204539 is a prime.

Together with 123204539, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123204041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61602270 + 61602271.

It is an arithmetic number, because the mean of its divisors is an integer number (61602271).

Almost surely, 2^123204541 is an apocalyptic number.

It is an amenable number.

123204541 is a deficient number, since it is larger than the sum of its proper divisors (1).

123204541 is an equidigital number, since it uses as much as digits as its factorization.

123204541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 123204541 is about 11099.7540963753. The cubic root of 123204541 is about 497.5945003687.

Adding to 123204541 its reverse (145402321), we get a palindrome (268606862).

It can be divided in two parts, 12320 and 4541, that added together give a palindrome (16861).

The spelling of 123204541 in words is "one hundred twenty-three million, two hundred four thousand, five hundred forty-one".