642962 has 8 divisors (see below), whose sum is σ = 988092. Its totient is φ = 313600.

The previous prime is 642953. The next prime is 642973. The reversal of 642962 is 269246.

It can be written as a sum of positive squares in 2 ways, for example, as 564001 + 78961 = 751^2 + 281^2 .

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

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 642962.

It is an unprimeable number.

642962 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, 3839 + ... + 4002.

2⁶⁴²⁹⁶² is an apocalyptic number.

642962 is a deficient number, since it is larger than the sum of its proper divisors (345130).

642962 is a wasteful number, since it uses less digits than its factorization.

642962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7884.

The product of its digits is 5184, while the sum is 29.

The square root of 642962 is about 801.8491129882. The cubic root of 642962 is about 86.3101296032.

The spelling of 642962 in words is "six hundred forty-two thousand, nine hundred sixty-two".