6921342 has 16 divisors (see below), whose sum is σ = 15380880. Its totient is φ = 2307096.

The previous prime is 6921337. The next prime is 6921347. The reversal of 6921342 is 2431296.

It is an interprime number because it is at equal distance from previous prime (6921337) and next prime (6921347).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6921347) 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, 64033 + ... + 64140.

It is an arithmetic number, because the mean of its divisors is an integer number (961305).

Almost surely, 2^6921342 is an apocalyptic number.

6921342 is an abundant number, since it is smaller than the sum of its proper divisors (8459538).

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

6921342 is a wasteful number, since it uses less digits than its factorization.

6921342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128184 (or 128178 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 6921342 is about 2630.8443511542. The cubic root of 6921342 is about 190.5739064714.

The spelling of 6921342 in words is "six million, nine hundred twenty-one thousand, three hundred forty-two".