4121539 has 2 divisors, whose sum is σ = 4121540. Its totient is φ = 4121538.

The previous prime is 4121527. The next prime is 4121549. The reversal of 4121539 is 9351214.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4121539 - 2¹⁵ = 4088771 is a prime.

It is not a weakly prime, because it can be changed into another prime (4121549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2060769 + 2060770.

It is an arithmetic number, because the mean of its divisors is an integer number (2060770).

Almost surely, 2^4121539 is an apocalyptic number.

4121539 is a deficient number, since it is larger than the sum of its proper divisors (1).

4121539 is an equidigital number, since it uses as much as digits as its factorization.

4121539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 25.

The square root of 4121539 is about 2030.1573830617. The cubic root of 4121539 is about 160.3318503077.

The spelling of 4121539 in words is "four million, one hundred twenty-one thousand, five hundred thirty-nine".