40243210 has 24 divisors (see below), whose sum is σ = 84265380. Its totient is φ = 13797504.

The previous prime is 40243201. The next prime is 40243211. The reversal of 40243210 is 1234204.

It can be written as a sum of positive squares in 2 ways, for example, as 35319249 + 4923961 = 5943^2 + 2219^2 .

It is a super-2 number, since 2×40243210² = 3239031902208200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40243211) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40575 + ... + 41554.

Almost surely, 2^40243210 is an apocalyptic number.

40243210 is an abundant number, since it is smaller than the sum of its proper divisors (44022170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40243210 is a wasteful number, since it uses less digits than its factorization.

40243210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82150 (or 82143 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 40243210 is about 6343.7536206886. The cubic root of 40243210 is about 342.6869279926.

Adding to 40243210 its reverse (1234204), we get a palindrome (41477414).

The spelling of 40243210 in words is "forty million, two hundred forty-three thousand, two hundred ten".