135433821 has 8 divisors (see below), whose sum is σ = 188429760. Its totient is φ = 86363552.

The previous prime is 135433819. The next prime is 135433877. The reversal of 135433821 is 128334531.

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

It is a cyclic number.

It is not a de Polignac number, because 135433821 - 2¹ = 135433819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135433811) 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, 981336 + ... + 981473.

It is an arithmetic number, because the mean of its divisors is an integer number (23553720).

Almost surely, 2^135433821 is an apocalyptic number.

It is an amenable number.

135433821 is a deficient number, since it is larger than the sum of its proper divisors (52995939).

135433821 is a wasteful number, since it uses less digits than its factorization.

135433821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1962835.

The product of its digits is 8640, while the sum is 30.

The square root of 135433821 is about 11637.6037481949. The cubic root of 135433821 is about 513.5416953192.

The spelling of 135433821 in words is "one hundred thirty-five million, four hundred thirty-three thousand, eight hundred twenty-one".