3420140 has 12 divisors (see below), whose sum is σ = 7182336. Its totient is φ = 1368048.

The previous prime is 3420139. The next prime is 3420161. The reversal of 3420140 is 410243.

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85484 + ... + 85523.

It is an arithmetic number, because the mean of its divisors is an integer number (598528).

Almost surely, 2^3420140 is an apocalyptic number.

It is an amenable number.

3420140 is an abundant number, since it is smaller than the sum of its proper divisors (3762196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3420140 is a wasteful number, since it uses less digits than its factorization.

3420140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171016 (or 171014 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 3420140 is about 1849.3620521683. The cubic root of 3420140 is about 150.6657812706.

Adding to 3420140 its reverse (410243), we get a palindrome (3830383).

The spelling of 3420140 in words is "three million, four hundred twenty thousand, one hundred forty".