78334142 has 4 divisors (see below), whose sum is σ = 117501216. Its totient is φ = 39167070.

The previous prime is 78334127. The next prime is 78334153. The reversal of 78334142 is 24143387.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×78334142² = 12272475605752328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78334099 and 78334108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19583534 + ... + 19583537.

It is an arithmetic number, because the mean of its divisors is an integer number (29375304).

Almost surely, 2^78334142 is an apocalyptic number.

78334142 is a deficient number, since it is larger than the sum of its proper divisors (39167074).

78334142 is a wasteful number, since it uses less digits than its factorization.

78334142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39167073.

The product of its digits is 16128, while the sum is 32.

The square root of 78334142 is about 8850.6577156729. The cubic root of 78334142 is about 427.8751164163.

The spelling of 78334142 in words is "seventy-eight million, three hundred thirty-four thousand, one hundred forty-two".