40042015135520 has 192 divisors, whose sum is σ = 95646203412480. Its totient is φ = 15840432857088.

The previous prime is 40042015135481. The next prime is 40042015135537. The reversal of 40042015135520 is 2553151024004.

It is a super-2 number, since 2×40042015135520² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 9978073034 + ... + 9978077046.

It is an arithmetic number, because the mean of its divisors is an integer number (498157309440).

Almost surely, 2^{40042015135520} is an apocalyptic number.

40042015135520 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 40042015135520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47823101706240).

40042015135520 is an abundant number, since it is smaller than the sum of its proper divisors (55604188276960).

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

40042015135520 is a wasteful number, since it uses less digits than its factorization.

40042015135520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5587 (or 5579 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 40042015135520 its reverse (2553151024004), we get a palindrome (42595166159524).

The spelling of 40042015135520 in words is "forty trillion, forty-two billion, fifteen million, one hundred thirty-five thousand, five hundred twenty".