42802 has 4 divisors (see below), whose sum is σ = 64206. Its totient is φ = 21400.

The previous prime is 42797. The next prime is 42821. The reversal of 42802 is 20824.

42802 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 40401 + 2401 = 201^2 + 49^2 .

It is a super-2 number, since 2×42802² = 3664022408, which contains 22 as substring.

It is a nialpdrome in base 16.

It is an unprimeable number.

42802 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10699 + ... + 10702.

2⁴²⁸⁰² is an apocalyptic number.

42802 is a deficient number, since it is larger than the sum of its proper divisors (21404).

42802 is a wasteful number, since it uses less digits than its factorization.

42802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21403.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 42802 is about 206.8864422818. The cubic root of 42802 is about 34.9801247701.

The spelling of 42802 in words is "forty-two thousand, eight hundred two".