102000019 has 8 divisors (see below), whose sum is σ = 111557808. Its totient is φ = 92489760.

The previous prime is 101999969. The next prime is 102000023. The reversal of 102000019 is 910000201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 102000019 - 2¹¹ = 101997971 is a prime.

It is a super-2 number, since 2×102000019² = 20808007752000722, 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 = 101999972 and 102000008.

It is not an unprimeable number, because it can be changed into a prime (102000419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7312 + ... + 16045.

It is an arithmetic number, because the mean of its divisors is an integer number (13944726).

Almost surely, 2^102000019 is an apocalyptic number.

102000019 is a deficient number, since it is larger than the sum of its proper divisors (9557789).

102000019 is a wasteful number, since it uses less digits than its factorization.

102000019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23765.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 102000019 is about 10099.5058790022. The cubic root of 102000019 is about 467.2329018467.

The spelling of 102000019 in words is "one hundred two million, nineteen", and thus it is an aban number.