134392478 has 8 divisors (see below), whose sum is σ = 219915000. Its totient is φ = 61087480.

The previous prime is 134392477. The next prime is 134392513. The reversal of 134392478 is 874293431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×134392478² = 36122676285960968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134392477) 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 3 ways as a sum of consecutive naturals, for example, 3054353 + ... + 3054396.

It is an arithmetic number, because the mean of its divisors is an integer number (27489375).

Almost surely, 2^134392478 is an apocalyptic number.

134392478 is a deficient number, since it is larger than the sum of its proper divisors (85522522).

134392478 is a wasteful number, since it uses less digits than its factorization.

134392478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6108762.

The product of its digits is 145152, while the sum is 41.

The square root of 134392478 is about 11592.7769753412. The cubic root of 134392478 is about 512.2221097488. Note that the first 3 decimals are identical.

The spelling of 134392478 in words is "one hundred thirty-four million, three hundred ninety-two thousand, four hundred seventy-eight".