40012421200 has 30 divisors (see below), whose sum is σ = 96129842894. Its totient is φ = 16004968320.

The previous prime is 40012421177. The next prime is 40012421221. The reversal of 40012421200 is 212421004.

It can be written as a sum of positive squares in 3 ways, for example, as 90782784 + 39921638416 = 9528^2 + 199804^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50015127 + ... + 50015926.

Almost surely, 2^40012421200 is an apocalyptic number.

40012421200 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40012421200 is an abundant number, since it is smaller than the sum of its proper divisors (56117421694).

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

40012421200 is a wasteful number, since it uses less digits than its factorization.

40012421200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100031071 (or 100031060 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 40012421200 its reverse (212421004), we get a palindrome (40224842204).

The spelling of 40012421200 in words is "forty billion, twelve million, four hundred twenty-one thousand, two hundred".