2140481 has 4 divisors (see below), whose sum is σ = 2446272. Its totient is φ = 1834692.

The previous prime is 2140477. The next prime is 2140513. The reversal of 2140481 is 1840412.

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 2140481 - 2² = 2140477 is a prime.

It is a super-2 number, since 2×2140481² = 9163317822722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2140421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152885 + ... + 152898.

It is an arithmetic number, because the mean of its divisors is an integer number (611568).

2^2140481 is an apocalyptic number.

It is an amenable number.

2140481 is a deficient number, since it is larger than the sum of its proper divisors (305791).

2140481 is an equidigital number, since it uses as much as digits as its factorization.

2140481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305790.

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 2140481 is about 1463.0382770112. The cubic root of 2140481 is about 128.8755284352.

Adding to 2140481 its reverse (1840412), we get a palindrome (3980893).

The spelling of 2140481 in words is "two million, one hundred forty thousand, four hundred eighty-one".