10121442140 has 24 divisors (see below), whose sum is σ = 21257995920. Its totient is φ = 4048011648.

The previous prime is 10121442017. The next prime is 10121442157. The reversal of 10121442140 is 4124412101.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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, 130499 + ... + 193061.

It is an arithmetic number, because the mean of its divisors is an integer number (885749830).

Almost surely, 2^10121442140 is an apocalyptic number.

10121442140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10121442140 is an abundant number, since it is smaller than the sum of its proper divisors (11136553780).

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

10121442140 is a wasteful number, since it uses less digits than its factorization.

10121442140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70661 (or 70659 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 10121442140 its reverse (4124412101), we get a palindrome (14245854241).

The spelling of 10121442140 in words is "ten billion, one hundred twenty-one million, four hundred forty-two thousand, one hundred forty".