1241400521 has 8 divisors (see below), whose sum is σ = 1251264000. Its totient is φ = 1231550640.

The previous prime is 1241400509. The next prime is 1241400541. The reversal of 1241400521 is 1250041421.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1241400521 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1241400493 and 1241400502.

It is not an unprimeable number, because it can be changed into a prime (1241400541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256280 + ... + 261078.

It is an arithmetic number, because the mean of its divisors is an integer number (156408000).

Almost surely, 2^1241400521 is an apocalyptic number.

It is an amenable number.

1241400521 is a deficient number, since it is larger than the sum of its proper divisors (9863479).

1241400521 is a wasteful number, since it uses less digits than its factorization.

1241400521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6799.

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 1241400521 is about 35233.5141732981. The cubic root of 1241400521 is about 1074.7413896756.

Adding to 1241400521 its reverse (1250041421), we get a palindrome (2491441942).

The spelling of 1241400521 in words is "one billion, two hundred forty-one million, four hundred thousand, five hundred twenty-one".