20101041240 has 128 divisors (see below), whose sum is σ = 69790464000. Its totient is φ = 4536350208.

The previous prime is 20101041223. The next prime is 20101041269. The reversal of 20101041240 is 4214010102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent 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, 85095 + ... + 217814.

It is an arithmetic number, because the mean of its divisors is an integer number (545238000).

Almost surely, 2^20101041240 is an apocalyptic number.

20101041240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20101041240 is an abundant number, since it is smaller than the sum of its proper divisors (49689422760).

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

20101041240 is a wasteful number, since it uses less digits than its factorization.

20101041240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303009 (or 303005 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20101041240 its reverse (4214010102), we get a palindrome (24315051342).

The spelling of 20101041240 in words is "twenty billion, one hundred one million, forty-one thousand, two hundred forty".