1241245181 has 16 divisors (see below), whose sum is σ = 1389104640. Its totient is φ = 1099356720.

The previous prime is 1241245171. The next prime is 1241245183. The reversal of 1241245181 is 1815421421.

It is a happy number.

It is not a de Polignac number, because 1241245181 - 2¹⁰ = 1241244157 is a prime.

It is a super-2 number, since 2×1241245181² = 3081379198711445522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1241245183) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195056 + ... + 201318.

It is an arithmetic number, because the mean of its divisors is an integer number (86819040).

Almost surely, 2^1241245181 is an apocalyptic number.

1241245181 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1241245181 is a deficient number, since it is larger than the sum of its proper divisors (147859459).

1241245181 is a wasteful number, since it uses less digits than its factorization.

1241245181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6736.

The product of its digits is 2560, while the sum is 29.

The square root of 1241245181 is about 35231.3096690997. The cubic root of 1241245181 is about 1074.6965593170.

The spelling of 1241245181 in words is "one billion, two hundred forty-one million, two hundred forty-five thousand, one hundred eighty-one".