40290210 has 40 divisors (see below), whose sum is σ = 108338076. Its totient is φ = 10743840.

The previous prime is 40290197. The next prime is 40290223. The reversal of 40290210 is 1209204.

40290210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40290197) and next prime (40290223).

It can be written as a sum of positive squares in 2 ways, for example, as 38900169 + 1390041 = 6237^2 + 1179^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon 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 19 ways as a sum of consecutive naturals, for example, 24061 + ... + 25680.

Almost surely, 2^40290210 is an apocalyptic number.

40290210 is an abundant number, since it is smaller than the sum of its proper divisors (68047866).

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

40290210 is a wasteful number, since it uses less digits than its factorization.

40290210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49760 (or 49751 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 40290210 is about 6347.4569711027. The cubic root of 40290210 is about 342.8202839841.

Adding to 40290210 its reverse (1209204), we get a palindrome (41499414).

The spelling of 40290210 in words is "forty million, two hundred ninety thousand, two hundred ten".