102103019 has 4 divisors (see below), whose sum is σ = 102233544. Its totient is φ = 101972496.

The previous prime is 102103013. The next prime is 102103039. The reversal of 102103019 is 910301201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 910301201 = 557 ⋅1634293.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102103019 is a prime.

It is a super-2 number, since 2×102103019² = 20850052977828722, 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 = 102102988 and 102103006.

It is not an unprimeable number, because it can be changed into a prime (102103013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64082 + ... + 65655.

It is an arithmetic number, because the mean of its divisors is an integer number (25558386).

Almost surely, 2^102103019 is an apocalyptic number.

102103019 is a deficient number, since it is larger than the sum of its proper divisors (130525).

102103019 is an equidigital number, since it uses as much as digits as its factorization.

102103019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130524.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 102103019 is about 10104.6038517104. The cubic root of 102103019 is about 467.3901201149.

The spelling of 102103019 in words is "one hundred two million, one hundred three thousand, nineteen".