1241146666 has 4 divisors (see below), whose sum is σ = 1861720002. Its totient is φ = 620573332.

The previous prime is 1241146663. The next prime is 1241146679. The reversal of 1241146666 is 6666411421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6666411421 = 19 ⋅350863759.

It can be written as a sum of positive squares in only one way, i.e., 1188801441 + 52345225 = 34479^2 + 7235^2 .

It is not an unprimeable number, because it can be changed into a prime (1241146663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 310286665 + ... + 310286668.

Almost surely, 2^1241146666 is an apocalyptic number.

1241146666 is a deficient number, since it is larger than the sum of its proper divisors (620573336).

1241146666 is an equidigital number, since it uses as much as digits as its factorization.

1241146666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620573335.

The product of its digits is 41472, while the sum is 37.

The square root of 1241146666 is about 35229.9115241580. The cubic root of 1241146666 is about 1074.6681264351.

The spelling of 1241146666 in words is "one billion, two hundred forty-one million, one hundred forty-six thousand, six hundred sixty-six".