20040542412 has 96 divisors (see below), whose sum is σ = 54548411904. Its totient is φ = 5659008000.

The previous prime is 20040542407. The next prime is 20040542443. The reversal of 20040542412 is 21424504002.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 182433 + ... + 270855.

It is an arithmetic number, because the mean of its divisors is an integer number (568212624).

Almost surely, 2^20040542412 is an apocalyptic number.

20040542412 is a gapful number since it is divisible by the number (22) 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 20040542412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27274205952).

20040542412 is an abundant number, since it is smaller than the sum of its proper divisors (34507869492).

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

20040542412 is a wasteful number, since it uses less digits than its factorization.

20040542412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88559 (or 88557 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The spelling of 20040542412 in words is "twenty billion, forty million, five hundred forty-two thousand, four hundred twelve".