234364566421 has 2 divisors, whose sum is σ = 234364566422. Its totient is φ = 234364566420.

The previous prime is 234364566419. The next prime is 234364566437. The reversal of 234364566421 is 124665463432.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210946385521 + 23418180900 = 459289^2 + 153030^2 .

It is a cyclic number.

It is not a de Polignac number, because 234364566421 - 2¹ = 234364566419 is a prime.

Together with 234364566419, 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 (234364566461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117182283210 + 117182283211.

It is an arithmetic number, because the mean of its divisors is an integer number (117182283211).

Almost surely, 2^234364566421 is an apocalyptic number.

It is an amenable number.

234364566421 is a deficient number, since it is larger than the sum of its proper divisors (1).

234364566421 is an equidigital number, since it uses as much as digits as its factorization.

234364566421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2488320, while the sum is 46.

The spelling of 234364566421 in words is "two hundred thirty-four billion, three hundred sixty-four million, five hundred sixty-six thousand, four hundred twenty-one".