260742215 has 4 divisors (see below), whose sum is σ = 312890664. Its totient is φ = 208593768.

The previous prime is 260742193. The next prime is 260742227. The reversal of 260742215 is 512247062.

It is a happy number.

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 260742215 - 2¹⁸ = 260480071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26074217 + ... + 26074226.

It is an arithmetic number, because the mean of its divisors is an integer number (78222666).

Almost surely, 2^260742215 is an apocalyptic number.

260742215 is a deficient number, since it is larger than the sum of its proper divisors (52148449).

260742215 is an equidigital number, since it uses as much as digits as its factorization.

260742215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52148448.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 260742215 is about 16147.5142049790. The cubic root of 260742215 is about 638.8571849954.

Adding to 260742215 its reverse (512247062), we get a palindrome (772989277).

The spelling of 260742215 in words is "two hundred sixty million, seven hundred forty-two thousand, two hundred fifteen".