4234121509 has 2 divisors, whose sum is σ = 4234121510. Its totient is φ = 4234121508.

The previous prime is 4234121491. The next prime is 4234121513. The reversal of 4234121509 is 9051214324.

4234121509 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3525390625 + 708730884 = 59375^2 + 26622^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4234121509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4234121599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2117060754 + 2117060755.

It is an arithmetic number, because the mean of its divisors is an integer number (2117060755).

Almost surely, 2^4234121509 is an apocalyptic number.

It is an amenable number.

4234121509 is a deficient number, since it is larger than the sum of its proper divisors (1).

4234121509 is an equidigital number, since it uses as much as digits as its factorization.

4234121509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 4234121509 is about 65070.1276239720. The cubic root of 4234121509 is about 1617.7861225116.

The spelling of 4234121509 in words is "four billion, two hundred thirty-four million, one hundred twenty-one thousand, five hundred nine".