20042000034540 has 96 divisors (see below), whose sum is σ = 61224573102336. Its totient is φ = 4858240247040.

The previous prime is 20042000034487. The next prime is 20042000034547. The reversal of 20042000034540 is 4543000024002.

It is a super-2 number, since 2×20042000034540² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20042000034540.

It is not an unprimeable number, because it can be changed into a prime (20042000034547) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6225514 + ... + 8879246.

It is an arithmetic number, because the mean of its divisors is an integer number (637755969816).

Almost surely, 2^{20042000034540} is an apocalyptic number.

20042000034540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20042000034540 is an abundant number, since it is smaller than the sum of its proper divisors (41182573067796).

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

20042000034540 is a wasteful number, since it uses less digits than its factorization.

20042000034540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2665199 (or 2665197 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

Adding to 20042000034540 its reverse (4543000024002), we get a palindrome (24585000058542).

The spelling of 20042000034540 in words is "twenty trillion, forty-two billion, thirty-four thousand, five hundred forty".