1241400401 has 4 divisors (see below), whose sum is σ = 1314423972. Its totient is φ = 1168376832.

The previous prime is 1241400353. The next prime is 1241400403. The reversal of 1241400401 is 1040041421.

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 746382400 + 495018001 = 27320^2 + 22249^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1241400401 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 73023553 = 1241400401 / (1 + 2 + 4 + 1 + 4 + 0 + 0 + 4 + 0 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1241400401.

It is not an unprimeable number, because it can be changed into a prime (1241400403) 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, 36511760 + ... + 36511793.

It is an arithmetic number, because the mean of its divisors is an integer number (328605993).

Almost surely, 2^1241400401 is an apocalyptic number.

It is an amenable number.

1241400401 is a deficient number, since it is larger than the sum of its proper divisors (73023571).

1241400401 is an equidigital number, since it uses as much as digits as its factorization.

1241400401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73023570.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1241400401 is about 35233.5124703740. The cubic root of 1241400401 is about 1074.7413550456.

Adding to 1241400401 its reverse (1040041421), we get a palindrome (2281441822).

The spelling of 1241400401 in words is "one billion, two hundred forty-one million, four hundred thousand, four hundred one".