7642 has 4 divisors (see below), whose sum is σ = 11466. Its totient is φ = 3820.

The previous prime is 7639. The next prime is 7643. The reversal of 7642 is 2467.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5041 + 2601 = 71^2 + 51^2 .

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (7643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1909 + ... + 1912.

2⁷⁶⁴² is an apocalyptic number.

7642 is a deficient number, since it is larger than the sum of its proper divisors (3824).

7642 is a wasteful number, since it uses less digits than its factorization.

7642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3823.

The product of its digits is 336, while the sum is 19.

The square root of 7642 is about 87.4185335041. The cubic root of 7642 is about 19.6971024795.

The spelling of 7642 in words is "seven thousand, six hundred forty-two".