78112427 has 2 divisors, whose sum is σ = 78112428. Its totient is φ = 78112426.

The previous prime is 78112417. The next prime is 78112459. The reversal of 78112427 is 72421187.

It is a happy number.

It is an a-pointer prime, because the next prime (78112459) can be obtained adding 78112427 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78112427 - 2⁸ = 78112171 is a prime.

It is a super-2 number, since 2×78112427² = 12203102503660658, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 78112393 and 78112402.

It is not a weakly prime, because it can be changed into another prime (78112417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39056213 + 39056214.

It is an arithmetic number, because the mean of its divisors is an integer number (39056214).

Almost surely, 2^78112427 is an apocalyptic number.

78112427 is a deficient number, since it is larger than the sum of its proper divisors (1).

78112427 is an equidigital number, since it uses as much as digits as its factorization.

78112427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6272, while the sum is 32.

The square root of 78112427 is about 8838.1234999292. The cubic root of 78112427 is about 427.4710526094.

The spelling of 78112427 in words is "seventy-eight million, one hundred twelve thousand, four hundred twenty-seven".