40142144102520 has 64 divisors (see below), whose sum is σ = 120479228583840. Its totient is φ = 10699878758400.

The previous prime is 40142144102503. The next prime is 40142144102629. The reversal of 40142144102520 is 2520144124104.

It is a super-2 number, since 2×40142144102520² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73053301 + ... + 73600740.

Almost surely, 2^{40142144102520} is an apocalyptic number.

40142144102520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40142144102520 is an abundant number, since it is smaller than the sum of its proper divisors (80337084481320).

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

40142144102520 is a wasteful number, since it uses less digits than its factorization.

40142144102520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146656336 (or 146656332 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 30.

Adding to 40142144102520 its reverse (2520144124104), we get a palindrome (42662288226624).

The spelling of 40142144102520 in words is "forty trillion, one hundred forty-two billion, one hundred forty-four million, one hundred two thousand, five hundred twenty".