20041142440 has 64 divisors (see below), whose sum is σ = 50335940160. Its totient is φ = 7118200320.

The previous prime is 20041142423. The next prime is 20041142467. The reversal of 20041142440 is 4424114002.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 510709 + ... + 548548.

It is an arithmetic number, because the mean of its divisors is an integer number (786499065).

Almost surely, 2^20041142440 is an apocalyptic number.

20041142440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20041142440 is an abundant number, since it is smaller than the sum of its proper divisors (30294797720).

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

20041142440 is a wasteful number, since it uses less digits than its factorization.

20041142440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059322 (or 1059318 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 20041142440 its reverse (4424114002), we get a palindrome (24465256442).

The spelling of 20041142440 in words is "twenty billion, forty-one million, one hundred forty-two thousand, four hundred forty".