3140421 has 4 divisors (see below), whose sum is σ = 4187232. Its totient is φ = 2093612.

The previous prime is 3140413. The next prime is 3140437. The reversal of 3140421 is 1240413.

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 3140421 - 2³ = 3140413 is a prime.

It is a D-number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3140421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3140441) 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, 523401 + ... + 523406.

It is an arithmetic number, because the mean of its divisors is an integer number (1046808).

Almost surely, 2^3140421 is an apocalyptic number.

It is an amenable number.

3140421 is a deficient number, since it is larger than the sum of its proper divisors (1046811).

3140421 is a wasteful number, since it uses less digits than its factorization.

3140421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046810.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 3140421 is about 1772.1233027078. The cubic root of 3140421 is about 146.4409792268.

Adding to 3140421 its reverse (1240413), we get a palindrome (4380834).

The spelling of 3140421 in words is "three million, one hundred forty thousand, four hundred twenty-one".