1241666215 has 4 divisors (see below), whose sum is σ = 1489999464. Its totient is φ = 993332968.

The previous prime is 1241666189. The next prime is 1241666273. The reversal of 1241666215 is 5126661421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5126661421 = 7 ⋅732380203.

It is a cyclic number.

It is not a de Polignac number, because 1241666215 - 2⁵ = 1241666183 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, 124166617 + ... + 124166626.

It is an arithmetic number, because the mean of its divisors is an integer number (372499866).

Almost surely, 2^1241666215 is an apocalyptic number.

1241666215 is a deficient number, since it is larger than the sum of its proper divisors (248333249).

1241666215 is an equidigital number, since it uses as much as digits as its factorization.

1241666215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248333248.

The product of its digits is 17280, while the sum is 34.

The square root of 1241666215 is about 35237.2844441793. The cubic root of 1241666215 is about 1074.8180589869.

The spelling of 1241666215 in words is "one billion, two hundred forty-one million, six hundred sixty-six thousand, two hundred fifteen".