234125821 has 2 divisors, whose sum is σ = 234125822. Its totient is φ = 234125820.

The previous prime is 234125797. The next prime is 234125833. The reversal of 234125821 is 128521432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163481796 + 70644025 = 12786^2 + 8405^2 .

It is a cyclic number.

It is not a de Polignac number, because 234125821 - 2⁵ = 234125789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 234125821.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (234125851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117062910 + 117062911.

It is an arithmetic number, because the mean of its divisors is an integer number (117062911).

Almost surely, 2^234125821 is an apocalyptic number.

It is an amenable number.

234125821 is a deficient number, since it is larger than the sum of its proper divisors (1).

234125821 is an equidigital number, since it uses as much as digits as its factorization.

234125821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3840, while the sum is 28.

The square root of 234125821 is about 15301.1705761357. The cubic root of 234125821 is about 616.3344421671.

The spelling of 234125821 in words is "two hundred thirty-four million, one hundred twenty-five thousand, eight hundred twenty-one".