123421541 has 2 divisors, whose sum is σ = 123421542. Its totient is φ = 123421540.

The previous prime is 123421523. The next prime is 123421553. The reversal of 123421541 is 145124321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115132900 + 8288641 = 10730^2 + 2879^2 .

It is a cyclic number.

It is not a de Polignac number, because 123421541 - 2¹⁴ = 123405157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123423541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61710770 + 61710771.

It is an arithmetic number, because the mean of its divisors is an integer number (61710771).

Almost surely, 2^123421541 is an apocalyptic number.

It is an amenable number.

123421541 is a deficient number, since it is larger than the sum of its proper divisors (1).

123421541 is an equidigital number, since it uses as much as digits as its factorization.

123421541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 960, while the sum is 23.

The square root of 123421541 is about 11109.5247873165. The cubic root of 123421541 is about 497.8864665409.

Adding to 123421541 its reverse (145124321), we get a palindrome (268545862).

The spelling of 123421541 in words is "one hundred twenty-three million, four hundred twenty-one thousand, five hundred forty-one".