135423047 has 2 divisors, whose sum is σ = 135423048. Its totient is φ = 135423046.

The previous prime is 135423007. The next prime is 135423053. The reversal of 135423047 is 740324531.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135423047 - 2⁶ = 135422983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135423007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67711523 + 67711524.

It is an arithmetic number, because the mean of its divisors is an integer number (67711524).

Almost surely, 2^135423047 is an apocalyptic number.

135423047 is a deficient number, since it is larger than the sum of its proper divisors (1).

135423047 is an equidigital number, since it uses as much as digits as its factorization.

135423047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 135423047 is about 11637.1408430078. The cubic root of 135423047 is about 513.5280772414.

Adding to 135423047 its reverse (740324531), we get a palindrome (875747578).

The spelling of 135423047 in words is "one hundred thirty-five million, four hundred twenty-three thousand, forty-seven".