6402942 has 64 divisors (see below), whose sum is σ = 17525760. Its totient is φ = 1687392.

The previous prime is 6402941. The next prime is 6402953. The reversal of 6402942 is 2492046.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6402941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4263 + ... + 5565.

It is an arithmetic number, because the mean of its divisors is an integer number (273840).

Almost surely, 2^6402942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6402942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8762880).

6402942 is an abundant number, since it is smaller than the sum of its proper divisors (11122818).

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

6402942 is a wasteful number, since it uses less digits than its factorization.

6402942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334 (or 1328 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 6402942 is about 2530.4035251319. The cubic root of 6402942 is about 185.6919980580.

Adding to 6402942 its reverse (2492046), we get a palindrome (8894988).

The spelling of 6402942 in words is "six million, four hundred two thousand, nine hundred forty-two".