40121541342520 has 32 divisors (see below), whose sum is σ = 98480146932720. Its totient is φ = 14589651397120.

The previous prime is 40121541342511. The next prime is 40121541342539. The reversal of 40121541342520 is 2524314512104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45592660177 + ... + 45592661056.

Almost surely, 2^{40121541342520} is an apocalyptic number.

40121541342520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40121541342520 is an abundant number, since it is smaller than the sum of its proper divisors (58358605590200).

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

40121541342520 is a wasteful number, since it uses less digits than its factorization.

40121541342520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91185321255 (or 91185321251 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 34.

Adding to 40121541342520 its reverse (2524314512104), we get a palindrome (42645855854624).

The spelling of 40121541342520 in words is "forty trillion, one hundred twenty-one billion, five hundred forty-one million, three hundred forty-two thousand, five hundred twenty".