6142640 has 60 divisors (see below), whose sum is σ = 16623936. Its totient is φ = 2104704.

The previous prime is 6142613. The next prime is 6142649. The reversal of 6142640 is 462416.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (6142649) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 3137 + ... + 4703.

Almost surely, 2^6142640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6142640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8311968).

6142640 is an abundant number, since it is smaller than the sum of its proper divisors (10481296).

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

6142640 is a wasteful number, since it uses less digits than its factorization.

6142640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1594 (or 1581 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 6142640 is about 2478.4349900693. The cubic root of 6142640 is about 183.1407638237.

The spelling of 6142640 in words is "six million, one hundred forty-two thousand, six hundred forty".