78346123 has 2 divisors, whose sum is σ = 78346124. Its totient is φ = 78346122.

The previous prime is 78346067. The next prime is 78346141. The reversal of 78346123 is 32164387.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78346123 is a prime.

It is a super-2 number, since 2×78346123² = 12276229978262258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78347123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39173061 + 39173062.

It is an arithmetic number, because the mean of its divisors is an integer number (39173062).

Almost surely, 2^78346123 is an apocalyptic number.

78346123 is a deficient number, since it is larger than the sum of its proper divisors (1).

78346123 is an equidigital number, since it uses as much as digits as its factorization.

78346123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 34.

The square root of 78346123 is about 8851.3345321482. The cubic root of 78346123 is about 427.8969294270.

The spelling of 78346123 in words is "seventy-eight million, three hundred forty-six thousand, one hundred twenty-three".