102043440425 has 12 divisors (see below), whose sum is σ = 130897103820. Its totient is φ = 78819760320.

The previous prime is 102043440361. The next prime is 102043440427. The reversal of 102043440425 is 524044340201.

It can be written as a sum of positive squares in 6 ways, for example, as 376204816 + 101667235609 = 19396^2 + 318853^2 .

It is not a de Polignac number, because 102043440425 - 2⁶ = 102043440361 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (102043440427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70374062 + ... + 70375511.

It is an arithmetic number, because the mean of its divisors is an integer number (10908091985).

Almost surely, 2^102043440425 is an apocalyptic number.

It is an amenable number.

102043440425 is a deficient number, since it is larger than the sum of its proper divisors (28853663395).

102043440425 is a wasteful number, since it uses less digits than its factorization.

102043440425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140749612 (or 140749607 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 29.

Adding to 102043440425 its reverse (524044340201), we get a palindrome (626087780626).

The spelling of 102043440425 in words is "one hundred two billion, forty-three million, four hundred forty thousand, four hundred twenty-five".