123778063 has 4 divisors (see below), whose sum is σ = 125521488. Its totient is φ = 122034640.

The previous prime is 123778049. The next prime is 123778073. The reversal of 123778063 is 360877321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 360877321 = 7 ⋅51553903.

It is a cyclic number.

It is not a de Polignac number, because 123778063 - 2¹³ = 123769871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123778033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 871606 + ... + 871747.

It is an arithmetic number, because the mean of its divisors is an integer number (31380372).

Almost surely, 2^123778063 is an apocalyptic number.

123778063 is a deficient number, since it is larger than the sum of its proper divisors (1743425).

123778063 is an equidigital number, since it uses as much as digits as its factorization.

123778063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1743424.

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

The square root of 123778063 is about 11125.5589971920. The cubic root of 123778063 is about 498.3654127389.

The spelling of 123778063 in words is "one hundred twenty-three million, seven hundred seventy-eight thousand, sixty-three".