103128419 has 4 divisors (see below), whose sum is σ = 104092344. Its totient is φ = 102164496.

The previous prime is 103128391. The next prime is 103128439. The reversal of 103128419 is 914821301.

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 103128419 - 2⁸ = 103128163 is a prime.

It is a super-2 number, since 2×103128419² = 21270941610879122, 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 = 103128391 and 103128400.

It is not an unprimeable number, because it can be changed into a prime (103128439) 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, 481802 + ... + 482015.

It is an arithmetic number, because the mean of its divisors is an integer number (26023086).

Almost surely, 2^103128419 is an apocalyptic number.

103128419 is a deficient number, since it is larger than the sum of its proper divisors (963925).

103128419 is an equidigital number, since it uses as much as digits as its factorization.

103128419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963924.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 103128419 is about 10155.2163443228. The cubic root of 103128419 is about 468.9495462355.

The spelling of 103128419 in words is "one hundred three million, one hundred twenty-eight thousand, four hundred nineteen".