15120019 has 2 divisors, whose sum is σ = 15120020. Its totient is φ = 15120018.

The previous prime is 15120011. The next prime is 15120023. The reversal of 15120019 is 91002151.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15120019 - 2³ = 15120011 is a prime.

It is a super-2 number, since 2×15120019² = 457229949120722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15119978 and 15120005.

It is not a weakly prime, because it can be changed into another prime (15120011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7560009 + 7560010.

It is an arithmetic number, because the mean of its divisors is an integer number (7560010).

Almost surely, 2^15120019 is an apocalyptic number.

15120019 is a deficient number, since it is larger than the sum of its proper divisors (1).

15120019 is an equidigital number, since it uses as much as digits as its factorization.

15120019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90, while the sum is 19.

The square root of 15120019 is about 3888.4468621803. The cubic root of 15120019 is about 247.2772215657.

The spelling of 15120019 in words is "fifteen million, one hundred twenty thousand, nineteen".