642060 has 96 divisors (see below), whose sum is σ = 2116800. Its totient is φ = 161280.

The previous prime is 642049. The next prime is 642071. The reversal of 642060 is 60246.

It is an interprime number because it is at equal distance from previous prime (642049) and next prime (642071).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15640 + ... + 15680.

It is an arithmetic number, because the mean of its divisors is an integer number (22050).

2⁶⁴²⁰⁶⁰ is an apocalyptic number.

642060 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 642060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1058400).

642060 is an abundant number, since it is smaller than the sum of its proper divisors (1474740).

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

642060 is a wasteful number, since it uses less digits than its factorization.

642060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88 (or 80 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 642060 is about 801.2864656289. The cubic root of 642060 is about 86.2697497306.

The spelling of 642060 in words is "six hundred forty-two thousand, sixty".