40121250000 has 320 divisors, whose sum is σ = 139693392384. Its totient is φ = 9864000000.

The previous prime is 40121249989. The next prime is 40121250007. The reversal of 40121250000 is 5212104.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40121250007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 48749589 + ... + 48750411.

Almost surely, 2^40121250000 is an apocalyptic number.

40121250000 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 40121250000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69846696192).

40121250000 is an abundant number, since it is smaller than the sum of its proper divisors (99572142384).

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

40121250000 is an frugal number, since it uses more digits than its factorization.

40121250000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882 (or 846 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

Adding to 40121250000 its reverse (5212104), we get a palindrome (40126462104).

The spelling of 40121250000 in words is "forty billion, one hundred twenty-one million, two hundred fifty thousand".