123803812 has 36 divisors (see below), whose sum is σ = 239397340. Its totient is φ = 55978560.

The previous prime is 123803803. The next prime is 123803821. The reversal of 123803812 is 218308321.

It is an interprime number because it is at equal distance from previous prime (123803803) and next prime (123803821).

It can be written as a sum of positive squares in 2 ways, for example, as 58614336 + 65189476 = 7656^2 + 8074^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110278 + ... + 111394.

Almost surely, 2^123803812 is an apocalyptic number.

It is an amenable number.

123803812 is a deficient number, since it is larger than the sum of its proper divisors (115593528).

123803812 is a wasteful number, since it uses less digits than its factorization.

123803812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1372 (or 1359 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 123803812 is about 11126.7161372977. The cubic root of 123803812 is about 498.3999679230.

The spelling of 123803812 in words is "one hundred twenty-three million, eight hundred three thousand, eight hundred twelve".