134420431 has 4 divisors (see below), whose sum is σ = 134596000. Its totient is φ = 134244864.

The previous prime is 134420399. The next prime is 134420443. The reversal of 134420431 is 134024431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 134420431 - 2⁵ = 134420399 is a prime.

It is a super-2 number, since 2×134420431² = 36137704540451522, 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 (134420131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86631 + ... + 88168.

It is an arithmetic number, because the mean of its divisors is an integer number (33649000).

Almost surely, 2^134420431 is an apocalyptic number.

134420431 is a deficient number, since it is larger than the sum of its proper divisors (175569).

134420431 is an equidigital number, since it uses as much as digits as its factorization.

134420431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175568.

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

The square root of 134420431 is about 11593.9825340562. The cubic root of 134420431 is about 512.2576205459.

Adding to 134420431 its reverse (134024431), we get a palindrome (268444862).

The spelling of 134420431 in words is "one hundred thirty-four million, four hundred twenty thousand, four hundred thirty-one".