40142131532520 has 32 divisors (see below), whose sum is σ = 120426394597920. Its totient is φ = 10704568408640.

The previous prime is 40142131532519. The next prime is 40142131532527. The reversal of 40142131532520 is 2523513124104.

It is a super-2 number, since 2×40142131532520² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40142131532527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167258881266 + ... + 167258881505.

It is an arithmetic number, because the mean of its divisors is an integer number (3763324831185).

Almost surely, 2^{40142131532520} is an apocalyptic number.

40142131532520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40142131532520 is an abundant number, since it is smaller than the sum of its proper divisors (80284263065400).

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

40142131532520 is a wasteful number, since it uses less digits than its factorization.

40142131532520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334517762785 (or 334517762781 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

Adding to 40142131532520 its reverse (2523513124104), we get a palindrome (42665644656624).

The spelling of 40142131532520 in words is "forty trillion, one hundred forty-two billion, one hundred thirty-one million, five hundred thirty-two thousand, five hundred twenty".