40112420 has 48 divisors (see below), whose sum is σ = 89221440. Its totient is φ = 15106176.

The previous prime is 40112411. The next prime is 40112461. The reversal of 40112420 is 2421104.

It is a junction number, because it is equal to n+sod(n) for n = 40112395 and 40112404.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107354 + ... + 107726.

It is an arithmetic number, because the mean of its divisors is an integer number (1858780).

Almost surely, 2^40112420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40112420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44610720).

40112420 is an abundant number, since it is smaller than the sum of its proper divisors (49109020).

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

40112420 is a wasteful number, since it uses less digits than its factorization.

40112420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684 (or 682 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 40112420 is about 6333.4366658237. The cubic root of 40112420 is about 342.3152821420.

Adding to 40112420 its reverse (2421104), we get a palindrome (42533524).

It can be divided in two parts, 401 and 12420, that added together give a palindrome (12821).

The spelling of 40112420 in words is "forty million, one hundred twelve thousand, four hundred twenty".