1214155241 has 4 divisors (see below), whose sum is σ = 1307551812. Its totient is φ = 1120758672.

The previous prime is 1214155237. The next prime is 1214155247. The reversal of 1214155241 is 1425514121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 111915241 + 1102240000 = 10579^2 + 33200^2 .

It is a cyclic number.

It is not a de Polignac number, because 1214155241 - 2² = 1214155237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1214155241.

It is not an unprimeable number, because it can be changed into a prime (1214155247) 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, 46698266 + ... + 46698291.

It is an arithmetic number, because the mean of its divisors is an integer number (326887953).

Almost surely, 2^1214155241 is an apocalyptic number.

It is an amenable number.

1214155241 is a deficient number, since it is larger than the sum of its proper divisors (93396571).

1214155241 is an equidigital number, since it uses as much as digits as its factorization.

1214155241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93396570.

The product of its digits is 1600, while the sum is 26.

The square root of 1214155241 is about 34844.7304624386. The cubic root of 1214155241 is about 1066.8206321480.

Adding to 1214155241 its reverse (1425514121), we get a palindrome (2639669362).

The spelling of 1214155241 in words is "one billion, two hundred fourteen million, one hundred fifty-five thousand, two hundred forty-one".