134321421 has 32 divisors (see below), whose sum is σ = 197406720. Its totient is φ = 80740800.

The previous prime is 134321413. The next prime is 134321443. The reversal of 134321421 is 124123431.

It is not a de Polignac number, because 134321421 - 2³ = 134321413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134321461) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 495516 + ... + 495786.

It is an arithmetic number, because the mean of its divisors is an integer number (6168960).

Almost surely, 2^134321421 is an apocalyptic number.

It is an amenable number.

134321421 is a deficient number, since it is larger than the sum of its proper divisors (63085299).

134321421 is a wasteful number, since it uses less digits than its factorization.

134321421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537.

The product of its digits is 576, while the sum is 21.

The square root of 134321421 is about 11589.7118600938. The cubic root of 134321421 is about 512.1318185272.

Adding to 134321421 its reverse (124123431), we get a palindrome (258444852).

The spelling of 134321421 in words is "one hundred thirty-four million, three hundred twenty-one thousand, four hundred twenty-one".