40102 has 4 divisors (see below), whose sum is σ = 60156. Its totient is φ = 20050.

The previous prime is 40099. The next prime is 40111. The reversal of 40102 is 20104.

40102 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 is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10024 + ... + 10027.

It is an arithmetic number, because the mean of its divisors is an integer number (15039).

2⁴⁰¹⁰² is an apocalyptic number.

40102 is a deficient number, since it is larger than the sum of its proper divisors (20054).

40102 is a wasteful number, since it uses less digits than its factorization.

40102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20053.

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 40102 is about 200.2548376444. The cubic root of 40102 is about 34.2285638504.

Adding to 40102 its reverse (20104), we get a palindrome (60206).

The spelling of 40102 in words is "forty thousand, one hundred two", and thus it is an iban number.