135250421 has 4 divisors (see below), whose sum is σ = 137269152. Its totient is φ = 133231692.

The previous prime is 135250411. The next prime is 135250439. The reversal of 135250421 is 124052531.

135250421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135250421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135250411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1009265 + ... + 1009398.

It is an arithmetic number, because the mean of its divisors is an integer number (34317288).

Almost surely, 2^135250421 is an apocalyptic number.

It is an amenable number.

135250421 is a deficient number, since it is larger than the sum of its proper divisors (2018731).

135250421 is an equidigital number, since it uses as much as digits as its factorization.

135250421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2018730.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 135250421 is about 11629.7214498027. The cubic root of 135250421 is about 513.3097835470.

The spelling of 135250421 in words is "one hundred thirty-five million, two hundred fifty thousand, four hundred twenty-one".