1241142021 has 30 divisors (see below), whose sum is σ = 2156760870. Its totient is φ = 709221744.

The previous prime is 1241142013. The next prime is 1241142083. The reversal of 1241142021 is 1202411421.

1241142021 is a `hidden beast` number, since 1 + 241 + 1 + 420 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 876752100 + 364389921 = 29610^2 + 19089^2 .

It is not a de Polignac number, because 1241142021 - 2³ = 1241142013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1241141985 and 1241142003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1241146021) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 152386 + ... + 160323.

It is an arithmetic number, because the mean of its divisors is an integer number (71892029).

Almost surely, 2^1241142021 is an apocalyptic number.

It is an amenable number.

1241142021 is a deficient number, since it is larger than the sum of its proper divisors (915618849).

1241142021 is an equidigital number, since it uses as much as digits as its factorization.

1241142021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312735 (or 312719 counting only the distinct ones).

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

The square root of 1241142021 is about 35229.8456000023. The cubic root of 1241142021 is about 1074.6667857825. Note that the first 3 decimals are identical.

Adding to 1241142021 its reverse (1202411421), we get a palindrome (2443553442).

The spelling of 1241142021 in words is "one billion, two hundred forty-one million, one hundred forty-two thousand, twenty-one".