20120241040 has 40 divisors (see below), whose sum is σ = 46808720568. Its totient is φ = 8043079680.

The previous prime is 20120240971. The next prime is 20120241091. The reversal of 20120241040 is 4014202102.

It can be written as a sum of positive squares in 4 ways, for example, as 6800311296 + 13319929744 = 82464^2 + 115412^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52104 + ... + 207256.

Almost surely, 2^20120241040 is an apocalyptic number.

20120241040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20120241040 is an abundant number, since it is smaller than the sum of its proper divisors (26688479528).

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

20120241040 is a wasteful number, since it uses less digits than its factorization.

20120241040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156787 (or 156781 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20120241040 its reverse (4014202102), we get a palindrome (24134443142).

It can be divided in two parts, 201202 and 41040, that added together give a palindrome (242242).

The spelling of 20120241040 in words is "twenty billion, one hundred twenty million, two hundred forty-one thousand, forty".