2054401421 has 4 divisors (see below), whose sum is σ = 2068189500. Its totient is φ = 2040613344.

The previous prime is 2054401387. The next prime is 2054401451. The reversal of 2054401421 is 1241044502.

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 246961225 + 1807440196 = 15715^2 + 42514^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2054401421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2054401451) 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 3 ways as a sum of consecutive naturals, for example, 6893816 + ... + 6894113.

It is an arithmetic number, because the mean of its divisors is an integer number (517047375).

Almost surely, 2^2054401421 is an apocalyptic number.

It is an amenable number.

2054401421 is a deficient number, since it is larger than the sum of its proper divisors (13788079).

2054401421 is a wasteful number, since it uses less digits than its factorization.

2054401421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13788078.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 2054401421 is about 45325.5051929926. The cubic root of 2054401421 is about 1271.2425933197.

Adding to 2054401421 its reverse (1241044502), we get a palindrome (3295445923).

The spelling of 2054401421 in words is "two billion, fifty-four million, four hundred one thousand, four hundred twenty-one".