3140021 has 8 divisors (see below), whose sum is σ = 3264000. Its totient is φ = 3017520.

The previous prime is 3139993. The next prime is 3140041. The reversal of 3140021 is 1200413.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3140021 - 2¹⁰ = 3138997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3139984 and 3140011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3140041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5915 + ... + 6423.

It is an arithmetic number, because the mean of its divisors is an integer number (408000).

Almost surely, 2^3140021 is an apocalyptic number.

3140021 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3140021 is a deficient number, since it is larger than the sum of its proper divisors (123979).

3140021 is a wasteful number, since it uses less digits than its factorization.

3140021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 3140021 is about 1772.0104401498. The cubic root of 3140021 is about 146.4347614958.

Adding to 3140021 its reverse (1200413), we get a palindrome (4340434).

The spelling of 3140021 in words is "three million, one hundred forty thousand, twenty-one".