40550420 has 24 divisors (see below), whose sum is σ = 85415904. Its totient is φ = 16170656.

The previous prime is 40550417. The next prime is 40550441. The reversal of 40550420 is 2405504.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 40550392 and 40550401.

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, 4019 + ... + 9861.

It is an arithmetic number, because the mean of its divisors is an integer number (3558996).

Almost surely, 2^40550420 is an apocalyptic number.

It is an amenable number.

40550420 is an abundant number, since it is smaller than the sum of its proper divisors (44865484).

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

40550420 is a wasteful number, since it uses less digits than its factorization.

40550420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6199 (or 6197 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 40550420 is about 6367.9211678538. The cubic root of 40550420 is about 343.5567235253.

Adding to 40550420 its reverse (2405504), we get a palindrome (42955924).

The spelling of 40550420 in words is "forty million, five hundred fifty thousand, four hundred twenty".