6520142 has 4 divisors (see below), whose sum is σ = 9780216. Its totient is φ = 3260070.

The previous prime is 6520139. The next prime is 6520147. The reversal of 6520142 is 2410256.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6520147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1630034 + ... + 1630037.

It is an arithmetic number, because the mean of its divisors is an integer number (2445054).

Almost surely, 2^6520142 is an apocalyptic number.

6520142 is a deficient number, since it is larger than the sum of its proper divisors (3260074).

6520142 is a wasteful number, since it uses less digits than its factorization.

6520142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3260073.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 6520142 is about 2553.4568725553. The cubic root of 6520142 is about 186.8181289120.

Adding to 6520142 its reverse (2410256), we get a palindrome (8930398).

The spelling of 6520142 in words is "six million, five hundred twenty thousand, one hundred forty-two".