6942390 has 64 divisors (see below), whose sum is σ = 20514816. Its totient is φ = 1464192.

The previous prime is 6942379. The next prime is 6942401. The reversal of 6942390 is 932496.

It is an interprime number because it is at equal distance from previous prime (6942379) and next prime (6942401).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1459 + ... + 4001.

It is an arithmetic number, because the mean of its divisors is an integer number (320544).

Almost surely, 2^6942390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6942390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10257408).

6942390 is an abundant number, since it is smaller than the sum of its proper divisors (13572426).

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

6942390 is a wasteful number, since it uses less digits than its factorization.

6942390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2573.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 6942390 is about 2634.8415512133. The cubic root of 6942390 is about 190.7668912221.

The spelling of 6942390 in words is "six million, nine hundred forty-two thousand, three hundred ninety".