134463821 has 2 divisors, whose sum is σ = 134463822. Its totient is φ = 134463820.

The previous prime is 134463803. The next prime is 134463869. The reversal of 134463821 is 128364431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67404100 + 67059721 = 8210^2 + 8189^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134463821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134463521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67231910 + 67231911.

It is an arithmetic number, because the mean of its divisors is an integer number (67231911).

Almost surely, 2^134463821 is an apocalyptic number.

It is an amenable number.

134463821 is a deficient number, since it is larger than the sum of its proper divisors (1).

134463821 is an equidigital number, since it uses as much as digits as its factorization.

134463821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 32.

The square root of 134463821 is about 11595.8536123909. The cubic root of 134463821 is about 512.3127323739.

The spelling of 134463821 in words is "one hundred thirty-four million, four hundred sixty-three thousand, eight hundred twenty-one".