648142 has 16 divisors (see below), whose sum is σ = 1123632. Its totient is φ = 277120.

The previous prime is 648133. The next prime is 648173. The reversal of 648142 is 241846.

It is a congruent number.

It is an unprimeable number.

648142 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 493 + ... + 1240.

It is an arithmetic number, because the mean of its divisors is an integer number (70227).

2⁶⁴⁸¹⁴² is an apocalyptic number.

648142 is a deficient number, since it is larger than the sum of its proper divisors (475490).

648142 is a wasteful number, since it uses less digits than its factorization.

648142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1763.

The product of its digits is 1536, while the sum is 25.

The square root of 648142 is about 805.0726675276. The cubic root of 648142 is about 86.5412947271.

Adding to 648142 its reverse (241846), we get a palindrome (889988).

The spelling of 648142 in words is "six hundred forty-eight thousand, one hundred forty-two".