97642 has 4 divisors (see below), whose sum is σ = 146466. Its totient is φ = 48820.

The previous prime is 97613. The next prime is 97649. The reversal of 97642 is 24679.

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., 72361 + 25281 = 269^2 + 159^2 .

It is a plaindrome in base 13.

It is a nialpdrome in base 10.

It is a zygodrome in base 4.

It is a self number, because there is not a number n which added to its sum of digits gives 97642.

It is not an unprimeable number, because it can be changed into a prime (97649) 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 as a sum of consecutive naturals, namely, 24409 + ... + 24412.

2⁹⁷⁶⁴² is an apocalyptic number.

97642 is a deficient number, since it is larger than the sum of its proper divisors (48824).

97642 is a wasteful number, since it uses less digits than its factorization.

97642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48823.

The product of its digits is 3024, while the sum is 28.

The square root of 97642 is about 312.4771991682. The cubic root of 97642 is about 46.0481537329.

The spelling of 97642 in words is "ninety-seven thousand, six hundred forty-two".