40420440000 has 210 divisors, whose sum is σ = 144777312680. Its totient is φ = 10778688000.

The previous prime is 40420439957. The next prime is 40420440037. The reversal of 40420440000 is 4402404.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 303861 + ... + 416139.

Almost surely, 2^40420440000 is an apocalyptic number.

40420440000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40420440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72388656340).

40420440000 is an abundant number, since it is smaller than the sum of its proper divisors (104356872680).

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

40420440000 is a wasteful number, since it uses less digits than its factorization.

40420440000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112317 (or 112289 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

Adding to 40420440000 its reverse (4402404), we get a palindrome (40424842404).

The spelling of 40420440000 in words is "forty billion, four hundred twenty million, four hundred forty thousand".