123863738 has 4 divisors (see below), whose sum is σ = 185795610. Its totient is φ = 61931868.

The previous prime is 123863713. The next prime is 123863749. The reversal of 123863738 is 837368321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 837368321 = 79 ⋅10599599.

It can be written as a sum of positive squares in only one way, i.e., 73496329 + 50367409 = 8573^2 + 7097^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 123863695 and 123863704.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30965933 + ... + 30965936.

Almost surely, 2^123863738 is an apocalyptic number.

123863738 is a deficient number, since it is larger than the sum of its proper divisors (61931872).

123863738 is an equidigital number, since it uses as much as digits as its factorization.

123863738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61931871.

The product of its digits is 145152, while the sum is 41.

The square root of 123863738 is about 11129.4086994773. The cubic root of 123863738 is about 498.4803701291.

The spelling of 123863738 in words is "one hundred twenty-three million, eight hundred sixty-three thousand, seven hundred thirty-eight".