102912019 has 8 divisors (see below), whose sum is σ = 117678848. Its totient is φ = 88161480.

The previous prime is 102912011. The next prime is 102912041. The reversal of 102912019 is 910219201.

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

It is a cyclic number.

It is not a de Polignac number, because 102912019 - 2³ = 102912011 is a prime.

It is a super-2 number, since 2×102912019² = 21181767309312722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102911984 and 102912002.

It is not an unprimeable number, because it can be changed into a prime (102912011) 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, 16234 + ... + 21664.

It is an arithmetic number, because the mean of its divisors is an integer number (14709856).

Almost surely, 2^102912019 is an apocalyptic number.

102912019 is a deficient number, since it is larger than the sum of its proper divisors (14766829).

102912019 is an equidigital number, since it uses as much as digits as its factorization.

102912019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8145.

The product of its (nonzero) digits is 324, while the sum is 25.

The square root of 102912019 is about 10144.5561263172. The cubic root of 102912019 is about 468.6213090516.

The spelling of 102912019 in words is "one hundred two million, nine hundred twelve thousand, nineteen".