642152 has 16 divisors (see below), whose sum is σ = 1376160. Its totient is φ = 275184.

The previous prime is 642151. The next prime is 642157. The reversal of 642152 is 251246.

It is a happy number.

It is a super-2 number, since 2×642152² = 824718382208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (642151) 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, 5678 + ... + 5789.

It is an arithmetic number, because the mean of its divisors is an integer number (86010).

2⁶⁴²¹⁵² is an apocalyptic number.

It is an amenable number.

642152 is an abundant number, since it is smaller than the sum of its proper divisors (734008).

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

642152 is a wasteful number, since it uses less digits than its factorization.

642152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11480 (or 11476 counting only the distinct ones).

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

The square root of 642152 is about 801.3438712563. The cubic root of 642152 is about 86.2738700298.

Adding to 642152 its reverse (251246), we get a palindrome (893398).

The spelling of 642152 in words is "six hundred forty-two thousand, one hundred fifty-two".