105240515 has 4 divisors (see below), whose sum is σ = 126288624. Its totient is φ = 84192408.

The previous prime is 105240511. The next prime is 105240517. The reversal of 105240515 is 515042501.

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: 515042501 = 11131 ⋅46271.

It is a cyclic number.

It is not a de Polignac number, because 105240515 - 2² = 105240511 is a prime.

It is a super-2 number, since 2×105240515² = 22151131994930450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105240511) 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, 10524047 + ... + 10524056.

It is an arithmetic number, because the mean of its divisors is an integer number (31572156).

Almost surely, 2^105240515 is an apocalyptic number.

105240515 is a deficient number, since it is larger than the sum of its proper divisors (21048109).

105240515 is an equidigital number, since it uses as much as digits as its factorization.

105240515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21048108.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 105240515 is about 10258.6799833117. The cubic root of 105240515 is about 472.1293379993.

The spelling of 105240515 in words is "one hundred five million, two hundred forty thousand, five hundred fifteen".