642141 has 16 divisors (see below), whose sum is σ = 1008000. Its totient is φ = 402624.

The previous prime is 642133. The next prime is 642149. The reversal of 642141 is 141246.

It is an interprime number because it is at equal distance from previous prime (642133) and next prime (642149).

It is not a de Polignac number, because 642141 - 2³ = 642133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241 + ... + 1158.

It is an arithmetic number, because the mean of its divisors is an integer number (63000).

2⁶⁴²¹⁴¹ is an apocalyptic number.

It is an amenable number.

642141 is a deficient number, since it is larger than the sum of its proper divisors (365859).

642141 is a wasteful number, since it uses less digits than its factorization.

642141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1425 (or 1419 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 642141 is about 801.3370077564. The cubic root of 642141 is about 86.2733774061.

Adding to 642141 its reverse (141246), we get a palindrome (783387).

The spelling of 642141 in words is "six hundred forty-two thousand, one hundred forty-one".