134422021 has 4 divisors (see below), whose sum is σ = 137282112. Its totient is φ = 131561932.

The previous prime is 134421967. The next prime is 134422027. The reversal of 134422021 is 120224431.

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, and also an emirpimes, since its reverse is a distinct semiprime: 120224431 = 43 ⋅2795917.

It is a cyclic number.

It is not a de Polignac number, because 134422021 - 2²¹ = 132324869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 134422021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134422027) 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, 1429975 + ... + 1430068.

It is an arithmetic number, because the mean of its divisors is an integer number (34320528).

Almost surely, 2^134422021 is an apocalyptic number.

It is an amenable number.

134422021 is a deficient number, since it is larger than the sum of its proper divisors (2860091).

134422021 is an equidigital number, since it uses as much as digits as its factorization.

134422021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2860090.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 134422021 is about 11594.0511039067. The cubic root of 134422021 is about 512.2596402944.

Adding to 134422021 its reverse (120224431), we get a palindrome (254646452).

The spelling of 134422021 in words is "one hundred thirty-four million, four hundred twenty-two thousand, twenty-one".