40011420 has 24 divisors (see below), whose sum is σ = 112032144. Its totient is φ = 10669696.

The previous prime is 40011407. The next prime is 40011427. The reversal of 40011420 is 2411004.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 40011396 and 40011405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40011427) 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, 333369 + ... + 333488.

It is an arithmetic number, because the mean of its divisors is an integer number (4668006).

Almost surely, 2^40011420 is an apocalyptic number.

It is an amenable number.

40011420 is an abundant number, since it is smaller than the sum of its proper divisors (72020724).

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

40011420 is a wasteful number, since it uses less digits than its factorization.

40011420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666869 (or 666867 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 40011420 is about 6325.4580861784. The cubic root of 40011420 is about 342.0277327807.

Adding to 40011420 its reverse (2411004), we get a palindrome (42422424).

The spelling of 40011420 in words is "forty million, eleven thousand, four hundred twenty".