40000420442040 has 64 divisors (see below), whose sum is σ = 120018144074400. Its totient is φ = 10665278095872.

The previous prime is 40000420441921. The next prime is 40000420442093. The reversal of 40000420442040 is 4024402400004.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 40000420442040.

It is a congruent number.

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, 22591627 + ... + 24297786.

Almost surely, 2^{40000420442040} is an apocalyptic number.

40000420442040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40000420442040 is an abundant number, since it is smaller than the sum of its proper divisors (80017723632360).

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

40000420442040 is a wasteful number, since it uses less digits than its factorization.

40000420442040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46896536 (or 46896532 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 40000420442040 its reverse (4024402400004), we get a palindrome (44024822842044).

The spelling of 40000420442040 in words is "forty trillion, four hundred twenty million, four hundred forty-two thousand, forty".