134243251 has 2 divisors, whose sum is σ = 134243252. Its totient is φ = 134243250.

The previous prime is 134243243. The next prime is 134243269. The reversal of 134243251 is 152342431.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 134243251 - 2³ = 134243243 is a prime.

It is not a weakly prime, because it can be changed into another prime (134243651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67121625 + 67121626.

It is an arithmetic number, because the mean of its divisors is an integer number (67121626).

Almost surely, 2^134243251 is an apocalyptic number.

134243251 is a deficient number, since it is larger than the sum of its proper divisors (1).

134243251 is an equidigital number, since it uses as much as digits as its factorization.

134243251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 25.

The square root of 134243251 is about 11586.3389817492. The cubic root of 134243251 is about 512.0324521158.

Adding to 134243251 its reverse (152342431), we get a palindrome (286585682).

The spelling of 134243251 in words is "one hundred thirty-four million, two hundred forty-three thousand, two hundred fifty-one".