642116 has 12 divisors (see below), whose sum is σ = 1130220. Its totient is φ = 319200.

The previous prime is 642113. The next prime is 642121. The reversal of 642116 is 611246.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 577600 + 64516 = 760^2 + 254^2 .

It is not an unprimeable number, because it can be changed into a prime (642113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 566 + ... + 1266.

It is an arithmetic number, because the mean of its divisors is an integer number (94185).

2⁶⁴²¹¹⁶ is an apocalyptic number.

It is an amenable number.

642116 is a deficient number, since it is larger than the sum of its proper divisors (488104).

642116 is a wasteful number, since it uses less digits than its factorization.

642116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934 (or 932 counting only the distinct ones).

The product of its digits is 288, while the sum is 20.

The square root of 642116 is about 801.3214086744. The cubic root of 642116 is about 86.2722577857.

It can be divided in two parts, 64 and 2116, that multiplied together give a square (135424 = 368²).

The spelling of 642116 in words is "six hundred forty-two thousand, one hundred sixteen".