642358 has 8 divisors (see below), whose sum is σ = 966960. Its totient is φ = 320040.

The previous prime is 642281. The next prime is 642359. The reversal of 642358 is 853246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a d-powerful number, because it can be written as 6 + 4² + 3¹² + 2 + 5⁷ + 8⁵ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (642359) by changing a digit.

642358 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 3 ways as a sum of consecutive naturals, for example, 703 + ... + 1333.

It is an arithmetic number, because the mean of its divisors is an integer number (120870).

2⁶⁴²³⁵⁸ is an apocalyptic number.

642358 is a deficient number, since it is larger than the sum of its proper divisors (324602).

642358 is a wasteful number, since it uses less digits than its factorization.

642358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142.

The product of its digits is 5760, while the sum is 28.

The square root of 642358 is about 801.4723950330. The cubic root of 642358 is about 86.2830944902.

It can be divided in two parts, 642 and 358, that added together give a cube (1000 = 10³).

The spelling of 642358 in words is "six hundred forty-two thousand, three hundred fifty-eight".