134223421 has 8 divisors (see below), whose sum is σ = 137065464. Its totient is φ = 131408640.

The previous prime is 134223413. The next prime is 134223431. The reversal of 134223421 is 124322431.

It can be written as a sum of positive squares in 4 ways, for example, as 61308900 + 72914521 = 7830^2 + 8539^2 .

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 134223421 - 2³ = 134223413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 134223392 and 134223401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134223431) 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, 3291 + ... + 16711.

It is an arithmetic number, because the mean of its divisors is an integer number (17133183).

Almost surely, 2^134223421 is an apocalyptic number.

It is an amenable number.

134223421 is a deficient number, since it is larger than the sum of its proper divisors (2842043).

134223421 is a wasteful number, since it uses less digits than its factorization.

134223421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13631.

The product of its digits is 1152, while the sum is 22.

The square root of 134223421 is about 11585.4832009718. The cubic root of 134223421 is about 512.0072389215.

Adding to 134223421 its reverse (124322431), we get a palindrome (258545852).

The spelling of 134223421 in words is "one hundred thirty-four million, two hundred twenty-three thousand, four hundred twenty-one".