134143420 has 48 divisors (see below), whose sum is σ = 298045440. Its totient is φ = 50573376.

The previous prime is 134143393. The next prime is 134143421. The reversal of 134143420 is 24341431.

It is a junction number, because it is equal to n+sod(n) for n = 134143391 and 134143400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134143421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83949 + ... + 85531.

It is an arithmetic number, because the mean of its divisors is an integer number (6209280).

Almost surely, 2^134143420 is an apocalyptic number.

134143420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 134143420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149022720).

134143420 is an abundant number, since it is smaller than the sum of its proper divisors (163902020).

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

134143420 is a wasteful number, since it uses less digits than its factorization.

134143420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1834 (or 1832 counting only the distinct ones).

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

The square root of 134143420 is about 11582.0300465851. The cubic root of 134143420 is about 511.9054950492.

Adding to 134143420 its reverse (24341431), we get a palindrome (158484851).

The spelling of 134143420 in words is "one hundred thirty-four million, one hundred forty-three thousand, four hundred twenty".