134574821 has 8 divisors (see below), whose sum is σ = 137991744. Its totient is φ = 131171040.

The previous prime is 134574763. The next prime is 134574871. The reversal of 134574821 is 128475431.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134574821 is a prime.

It is a super-2 number, since 2×134574821² = 36220764894364082, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134574871) 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, 19400 + ... + 25406.

It is an arithmetic number, because the mean of its divisors is an integer number (17248968).

Almost surely, 2^134574821 is an apocalyptic number.

It is an amenable number.

134574821 is a deficient number, since it is larger than the sum of its proper divisors (3416923).

134574821 is an equidigital number, since it uses as much as digits as its factorization.

134574821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6571.

The product of its digits is 26880, while the sum is 35.

The square root of 134574821 is about 11600.6388186168. The cubic root of 134574821 is about 512.4536651348.

The spelling of 134574821 in words is "one hundred thirty-four million, five hundred seventy-four thousand, eight hundred twenty-one".