134242420 has 48 divisors (see below), whose sum is σ = 305157888. Its totient is φ = 49311360.

The previous prime is 134242417. The next prime is 134242453. The reversal of 134242420 is 24242431.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 134242391 and 134242400.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53637 + ... + 56083.

It is an arithmetic number, because the mean of its divisors is an integer number (6357456).

Almost surely, 2^134242420 is an apocalyptic number.

134242420 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 134242420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152578944).

134242420 is an abundant number, since it is smaller than the sum of its proper divisors (170915468).

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

134242420 is a wasteful number, since it uses less digits than its factorization.

134242420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2680 (or 2678 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 134242420 is about 11586.3031204953. The cubic root of 134242420 is about 512.0313955764.

Adding to 134242420 its reverse (24242431), we get a palindrome (158484851).

The spelling of 134242420 in words is "one hundred thirty-four million, two hundred forty-two thousand, four hundred twenty".