101203243440 has 120 divisors (see below), whose sum is σ = 339719662800. Its totient is φ = 24911557632.

The previous prime is 101203243429. The next prime is 101203243459. The reversal of 101203243440 is 44342302101.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 101203243440.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1207015 + ... + 1288134.

It is an arithmetic number, because the mean of its divisors is an integer number (2830997190).

Almost surely, 2^101203243440 is an apocalyptic number.

101203243440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101203243440 is an abundant number, since it is smaller than the sum of its proper divisors (238516419360).

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

101203243440 is a wasteful number, since it uses less digits than its factorization.

101203243440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2495191 (or 2495172 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 101203243440 its reverse (44342302101), we get a palindrome (145545545541).

The spelling of 101203243440 in words is "one hundred one billion, two hundred three million, two hundred forty-three thousand, four hundred forty".