135263121 has 8 divisors (see below), whose sum is σ = 206115264. Its totient is φ = 77293200.

The previous prime is 135263119. The next prime is 135263123. The reversal of 135263121 is 121362531.

135263121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (135263119) and next prime (135263123).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135263121 - 2¹ = 135263119 is a prime.

It is a super-2 number, since 2×135263121² = 36592223805321282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 135263091 and 135263100.

It is not an unprimeable number, because it can be changed into a prime (135263123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3220530 + ... + 3220571.

It is an arithmetic number, because the mean of its divisors is an integer number (25764408).

Almost surely, 2^135263121 is an apocalyptic number.

It is an amenable number.

135263121 is a deficient number, since it is larger than the sum of its proper divisors (70852143).

135263121 is an equidigital number, since it uses as much as digits as its factorization.

135263121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6441111.

The product of its digits is 1080, while the sum is 24.

The square root of 135263121 is about 11630.2674517829. The cubic root of 135263121 is about 513.3258496220.

The spelling of 135263121 in words is "one hundred thirty-five million, two hundred sixty-three thousand, one hundred twenty-one".