102040013244 has 24 divisors (see below), whose sum is σ = 256408238800. Its totient is φ = 31396927104.

The previous prime is 102040013197. The next prime is 102040013249. The reversal of 102040013244 is 442310040201.

It is a self number, because there is not a number n which added to its sum of digits gives 102040013244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102040013249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 327051169 + ... + 327051480.

Almost surely, 2^102040013244 is an apocalyptic number.

It is an amenable number.

102040013244 is an abundant number, since it is smaller than the sum of its proper divisors (154368225556).

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

102040013244 is a wasteful number, since it uses less digits than its factorization.

102040013244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654102669 (or 654102667 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 102040013244 its reverse (442310040201), we get a palindrome (544350053445).

The spelling of 102040013244 in words is "one hundred two billion, forty million, thirteen thousand, two hundred forty-four".