6420142 has 8 divisors (see below), whose sum is σ = 9641016. Its totient is φ = 3206472.

The previous prime is 6420109. The next prime is 6420173. The reversal of 6420142 is 2410246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2268 + ... + 4240.

It is an arithmetic number, because the mean of its divisors is an integer number (1205127).

Almost surely, 2^6420142 is an apocalyptic number.

6420142 is a deficient number, since it is larger than the sum of its proper divisors (3220874).

6420142 is a wasteful number, since it uses less digits than its factorization.

6420142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3602.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 6420142 is about 2533.7999131739. The cubic root of 6420142 is about 185.8581220437.

Adding to 6420142 its reverse (2410246), we get a palindrome (8830388).

The spelling of 6420142 in words is "six million, four hundred twenty thousand, one hundred forty-two".