2541201421 has 4 divisors (see below), whose sum is σ = 2772219744. Its totient is φ = 2310183100.

The previous prime is 2541201419. The next prime is 2541201457. The reversal of 2541201421 is 1241021452.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2541201421 - 2¹ = 2541201419 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2541201392 and 2541201401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2541201461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115509145 + ... + 115509166.

It is an arithmetic number, because the mean of its divisors is an integer number (693054936).

Almost surely, 2^2541201421 is an apocalyptic number.

It is an amenable number.

2541201421 is a deficient number, since it is larger than the sum of its proper divisors (231018323).

2541201421 is a wasteful number, since it uses less digits than its factorization.

2541201421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231018322.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 2541201421 is about 50410.3304988174. The cubic root of 2541201421 is about 1364.6240778503.

Adding to 2541201421 its reverse (1241021452), we get a palindrome (3782222873).

The spelling of 2541201421 in words is "two billion, five hundred forty-one million, two hundred one thousand, four hundred twenty-one".