135474121 has 2 divisors, whose sum is σ = 135474122. Its totient is φ = 135474120.

The previous prime is 135474113. The next prime is 135474137. The reversal of 135474121 is 121474531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111070521 + 24403600 = 10539^2 + 4940^2 .

It is a cyclic number.

It is not a de Polignac number, because 135474121 - 2³ = 135474113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135474121.

It is not a weakly prime, because it can be changed into another prime (135474151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67737060 + 67737061.

It is an arithmetic number, because the mean of its divisors is an integer number (67737061).

Almost surely, 2^135474121 is an apocalyptic number.

It is an amenable number.

135474121 is a deficient number, since it is larger than the sum of its proper divisors (1).

135474121 is an equidigital number, since it uses as much as digits as its factorization.

135474121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3360, while the sum is 28.

The square root of 135474121 is about 11639.3350755101. The cubic root of 135474121 is about 513.5926271514.

The spelling of 135474121 in words is "one hundred thirty-five million, four hundred seventy-four thousand, one hundred twenty-one".