2140401 has 4 divisors (see below), whose sum is σ = 2853872. Its totient is φ = 1426932.

The previous prime is 2140399. The next prime is 2140421. The reversal of 2140401 is 1040412.

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 not a de Polignac number, because 2140401 - 2¹ = 2140399 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2140421) 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, 356731 + ... + 356736.

It is an arithmetic number, because the mean of its divisors is an integer number (713468).

2^2140401 is an apocalyptic number.

It is an amenable number.

2140401 is a deficient number, since it is larger than the sum of its proper divisors (713471).

2140401 is an equidigital number, since it uses as much as digits as its factorization.

2140401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713470.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2140401 is about 1463.0109363911. The cubic root of 2140401 is about 128.8739228505.

Subtracting from 2140401 its product of nonzero digits (32), we obtain a square (2140369 = 1463²).

Adding to 2140401 its reverse (1040412), we get a palindrome (3180813).

The spelling of 2140401 in words is "two million, one hundred forty thousand, four hundred one".