123861433 has 4 divisors (see below), whose sum is σ = 123949540. Its totient is φ = 123773328.

The previous prime is 123861427. The next prime is 123861443. The reversal of 123861433 is 334168321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38539264 + 85322169 = 6208^2 + 9237^2 .

It is a cyclic number.

It is not a de Polignac number, because 123861433 - 2¹⁷ = 123730361 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123861395 and 123861404.

It is not an unprimeable number, because it can be changed into a prime (123861443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41910 + ... + 44767.

It is an arithmetic number, because the mean of its divisors is an integer number (30987385).

Almost surely, 2^123861433 is an apocalyptic number.

It is an amenable number.

123861433 is a deficient number, since it is larger than the sum of its proper divisors (88107).

123861433 is an equidigital number, since it uses as much as digits as its factorization.

123861433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88106.

The product of its digits is 10368, while the sum is 31.

The square root of 123861433 is about 11129.3051445272. The cubic root of 123861433 is about 498.4772780098.

The spelling of 123861433 in words is "one hundred twenty-three million, eight hundred sixty-one thousand, four hundred thirty-three".