134234921 has 2 divisors, whose sum is σ = 134234922. Its totient is φ = 134234920.

The previous prime is 134234909. The next prime is 134234963. The reversal of 134234921 is 129432431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133079296 + 1155625 = 11536^2 + 1075^2 .

It is a cyclic number.

It is not a de Polignac number, because 134234921 - 2¹⁴ = 134218537 is a prime.

It is not a weakly prime, because it can be changed into another prime (134134921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67117460 + 67117461.

It is an arithmetic number, because the mean of its divisors is an integer number (67117461).

Almost surely, 2^134234921 is an apocalyptic number.

It is an amenable number.

134234921 is a deficient number, since it is larger than the sum of its proper divisors (1).

134234921 is an equidigital number, since it uses as much as digits as its factorization.

134234921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 29.

The square root of 134234921 is about 11585.9795011039. The cubic root of 134234921 is about 512.0218610966.

It can be divided in two parts, 1342 and 34921, that added together give a palindrome (36263).

The spelling of 134234921 in words is "one hundred thirty-four million, two hundred thirty-four thousand, nine hundred twenty-one".