6521142 has 16 divisors (see below), whose sum is σ = 13728960. Its totient is φ = 2059272.

The previous prime is 6521131. The next prime is 6521153. The reversal of 6521142 is 2411256.

It is an interprime number because it is at equal distance from previous prime (6521131) and next prime (6521153).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28488 + ... + 28715.

It is an arithmetic number, because the mean of its divisors is an integer number (858060).

Almost surely, 2^6521142 is an apocalyptic number.

6521142 is an abundant number, since it is smaller than the sum of its proper divisors (7207818).

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

6521142 is a wasteful number, since it uses less digits than its factorization.

6521142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57227.

The product of its digits is 480, while the sum is 21.

The square root of 6521142 is about 2553.6526780281. The cubic root of 6521142 is about 186.8276792448.

Adding to 6521142 its reverse (2411256), we get a palindrome (8932398).

The spelling of 6521142 in words is "six million, five hundred twenty-one thousand, one hundred forty-two".