135400429 has 2 divisors, whose sum is σ = 135400430. Its totient is φ = 135400428.

The previous prime is 135400387. The next prime is 135400439. The reversal of 135400429 is 924004531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75724804 + 59675625 = 8702^2 + 7725^2 .

It is a cyclic number.

It is not a de Polignac number, because 135400429 - 2⁷ = 135400301 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 135400397 and 135400406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135400439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67700214 + 67700215.

It is an arithmetic number, because the mean of its divisors is an integer number (67700215).

Almost surely, 2^135400429 is an apocalyptic number.

It is an amenable number.

135400429 is a deficient number, since it is larger than the sum of its proper divisors (1).

135400429 is an equidigital number, since it uses as much as digits as its factorization.

135400429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 135400429 is about 11636.1690001478. The cubic root of 135400429 is about 513.4994862814.

The spelling of 135400429 in words is "one hundred thirty-five million, four hundred thousand, four hundred twenty-nine".