40020902 has 8 divisors (see below), whose sum is σ = 61653936. Its totient is φ = 19469592.

The previous prime is 40020853. The next prime is 40020913. The reversal of 40020902 is 20902004.

40020902 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270338 + ... + 270485.

It is an arithmetic number, because the mean of its divisors is an integer number (7706742).

Almost surely, 2^40020902 is an apocalyptic number.

40020902 is a deficient number, since it is larger than the sum of its proper divisors (21633034).

40020902 is a wasteful number, since it uses less digits than its factorization.

40020902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540862.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 40020902 is about 6326.2075527128. The cubic root of 40020902 is about 342.0547488243.

Adding to 40020902 its reverse (20902004), we get a palindrome (60922906).

The spelling of 40020902 in words is "forty million, twenty thousand, nine hundred two".