40002190 has 16 divisors (see below), whose sum is σ = 76239792. Its totient is φ = 15059584.

The previous prime is 40002133. The next prime is 40002191. The reversal of 40002190 is 9120004.

It is a super-2 number, since 2×40002190² = 3200350409592200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40002191) 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 in 7 ways as a sum of consecutive naturals, for example, 117484 + ... + 117823.

It is an arithmetic number, because the mean of its divisors is an integer number (4764987).

Almost surely, 2^40002190 is an apocalyptic number.

40002190 is a deficient number, since it is larger than the sum of its proper divisors (36237602).

40002190 is a wasteful number, since it uses less digits than its factorization.

40002190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235331.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 40002190 is about 6324.7284526689. The cubic root of 40002190 is about 342.0014306336.

Adding to 40002190 its reverse (9120004), we get a palindrome (49122194).

The spelling of 40002190 in words is "forty million, two thousand, one hundred ninety".