135220258 has 4 divisors (see below), whose sum is σ = 202830390. Its totient is φ = 67610128.

The previous prime is 135220249. The next prime is 135220259. The reversal of 135220258 is 852022531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 73393489 + 61826769 = 8567^2 + 7863^2 .

It is not an unprimeable number, because it can be changed into a prime (135220259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33805063 + ... + 33805066.

Almost surely, 2^135220258 is an apocalyptic number.

135220258 is a deficient number, since it is larger than the sum of its proper divisors (67610132).

135220258 is an equidigital number, since it uses as much as digits as its factorization.

135220258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67610131.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 135220258 is about 11628.4245708522. The cubic root of 135220258 is about 513.2716219551.

Adding to 135220258 its reverse (852022531), we get a palindrome (987242789).

The spelling of 135220258 in words is "one hundred thirty-five million, two hundred twenty thousand, two hundred fifty-eight".