134421378 has 32 divisors (see below), whose sum is σ = 330884736. Its totient is φ = 35451648.

The previous prime is 134421377. The next prime is 134421379. The reversal of 134421378 is 873124431.

It is an interprime number because it is at equal distance from previous prime (134421377) and next prime (134421379).

It is not an unprimeable number, because it can be changed into a prime (134421377) 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, 122551 + ... + 123642.

It is an arithmetic number, because the mean of its divisors is an integer number (10340148).

Almost surely, 2^134421378 is an apocalyptic number.

134421378 is an abundant number, since it is smaller than the sum of its proper divisors (196463358).

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

134421378 is a wasteful number, since it uses less digits than its factorization.

134421378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246218.

The product of its digits is 16128, while the sum is 33.

The square root of 134421378 is about 11594.0233741355. The cubic root of 134421378 is about 512.2588235049.

It can be divided in two parts, 1344 and 21378, that added together give a palindrome (22722).

The spelling of 134421378 in words is "one hundred thirty-four million, four hundred twenty-one thousand, three hundred seventy-eight".