78134 has 8 divisors (see below), whose sum is σ = 133968. Its totient is φ = 33480.

The previous prime is 78121. The next prime is 78137. The reversal of 78134 is 43187.

It is a happy number.

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

It is a super-2 number, since 2×78134² = 12209843912, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78137) by changing a digit.

78134 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2777 + ... + 2804.

It is an arithmetic number, because the mean of its divisors is an integer number (16746).

2⁷⁸¹³⁴ is an apocalyptic number.

78134 is a deficient number, since it is larger than the sum of its proper divisors (55834).

78134 is a wasteful number, since it uses less digits than its factorization.

78134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5590.

The product of its digits is 672, while the sum is 23.

The square root of 78134 is about 279.5245964133. The cubic root of 78134 is about 42.7510401808.

It can be divided in two parts, 78 and 134, that added together give a palindrome (212).

The spelling of 78134 in words is "seventy-eight thousand, one hundred thirty-four".