40210420 has 24 divisors (see below), whose sum is σ = 84576744. Its totient is φ = 16058496.

The previous prime is 40210409. The next prime is 40210433. The reversal of 40210420 is 2401204.

It can be written as a sum of positive squares in 4 ways, for example, as 595984 + 39614436 = 772^2 + 6294^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40210420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15882 + ... + 18238.

It is an arithmetic number, because the mean of its divisors is an integer number (3524031).

Almost surely, 2^40210420 is an apocalyptic number.

It is an amenable number.

40210420 is an abundant number, since it is smaller than the sum of its proper divisors (44366324).

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

40210420 is a wasteful number, since it uses less digits than its factorization.

40210420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3219 (or 3217 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 40210420 is about 6341.1686620055. The cubic root of 40210420 is about 342.5938294084.

Adding to 40210420 its reverse (2401204), we get a palindrome (42611624).

The spelling of 40210420 in words is "forty million, two hundred ten thousand, four hundred twenty".