78367123 has 2 divisors, whose sum is σ = 78367124. Its totient is φ = 78367122.

The previous prime is 78367117. The next prime is 78367129. The reversal of 78367123 is 32176387.

It is a balanced prime because it is at equal distance from previous prime (78367117) and next prime (78367129).

It is an emirp because it is prime and its reverse (32176387) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78367123 - 2¹⁷ = 78236051 is a prime.

It is a super-2 number, since 2×78367123² = 12282811934594258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78367129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39183561 + 39183562.

It is an arithmetic number, because the mean of its divisors is an integer number (39183562).

Almost surely, 2^78367123 is an apocalyptic number.

78367123 is a deficient number, since it is larger than the sum of its proper divisors (1).

78367123 is an equidigital number, since it uses as much as digits as its factorization.

78367123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 37.

The square root of 78367123 is about 8852.5207144632. The cubic root of 78367123 is about 427.9351573675.

The spelling of 78367123 in words is "seventy-eight million, three hundred sixty-seven thousand, one hundred twenty-three".