134443420 has 24 divisors (see below), whose sum is σ = 292068000. Its totient is φ = 51922752.

The previous prime is 134443417. The next prime is 134443427. The reversal of 134443420 is 24344431.

134443420 = 890² + 891² + ... + 1034².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134443427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115320 + ... + 116479.

It is an arithmetic number, because the mean of its divisors is an integer number (12169500).

Almost surely, 2^134443420 is an apocalyptic number.

134443420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

134443420 is an abundant number, since it is smaller than the sum of its proper divisors (157624580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

134443420 is a wasteful number, since it uses less digits than its factorization.

134443420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231837 (or 231835 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 134443420 is about 11594.9739111393. The cubic root of 134443420 is about 512.2868215115.

Adding to 134443420 its reverse (24344431), we get a palindrome (158787851).

The spelling of 134443420 in words is "one hundred thirty-four million, four hundred forty-three thousand, four hundred twenty".