10123819 has 4 divisors (see below), whose sum is σ = 10266480. Its totient is φ = 9981160.

The previous prime is 10123807. The next prime is 10123837. The reversal of 10123819 is 91832101.

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

It is a cyclic number.

It is not a de Polignac number, because 10123819 - 2²³ = 1735211 is a prime.

It is a super-2 number, since 2×10123819² = 204983422289522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10123793 and 10123802.

It is not an unprimeable number, because it can be changed into a prime (10123849) 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, 71224 + ... + 71365.

It is an arithmetic number, because the mean of its divisors is an integer number (2566620).

Almost surely, 2^10123819 is an apocalyptic number.

10123819 is a deficient number, since it is larger than the sum of its proper divisors (142661).

10123819 is an equidigital number, since it uses as much as digits as its factorization.

10123819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142660.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 10123819 is about 3181.7949336813. The cubic root of 10123819 is about 216.3290238771.

The spelling of 10123819 in words is "ten million, one hundred twenty-three thousand, eight hundred nineteen".