1241210421 has 12 divisors (see below), whose sum is σ = 1955846880. Its totient is φ = 752248680.

The previous prime is 1241210417. The next prime is 1241210423. The reversal of 1241210421 is 1240121421.

1241210421 is a `hidden beast` number, since 1 + 241 + 2 + 1 + 0 + 421 = 666.

It is not a de Polignac number, because 1241210421 - 2² = 1241210417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1241210394 and 1241210403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1241210423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6268641 + ... + 6268838.

It is an arithmetic number, because the mean of its divisors is an integer number (162987240).

Almost surely, 2^1241210421 is an apocalyptic number.

1241210421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1241210421 is a deficient number, since it is larger than the sum of its proper divisors (714636459).

1241210421 is a wasteful number, since it uses less digits than its factorization.

1241210421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12537496 (or 12537493 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 1241210421 is about 35230.8163544361. The cubic root of 1241210421 is about 1074.6865272401.

Adding to 1241210421 its reverse (1240121421), we get a palindrome (2481331842).

The spelling of 1241210421 in words is "one billion, two hundred forty-one million, two hundred ten thousand, four hundred twenty-one".