134442378 has 36 divisors (see below), whose sum is σ = 338851890. Its totient is φ = 38411856.

The previous prime is 134442331. The next prime is 134442389. The reversal of 134442378 is 873244431.

It can be written as a sum of positive squares in only one way, i.e., 120626289 + 13816089 = 10983^2 + 3717^2 .

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 75333 + ... + 77096.

Almost surely, 2^134442378 is an apocalyptic number.

134442378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

134442378 is an abundant number, since it is smaller than the sum of its proper divisors (204409512).

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

134442378 is a wasteful number, since it uses less digits than its factorization.

134442378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152451 (or 152441 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The square root of 134442378 is about 11594.9289777902. The cubic root of 134442378 is about 512.2854980198.

The spelling of 134442378 in words is "one hundred thirty-four million, four hundred forty-two thousand, three hundred seventy-eight".