102440021041 has 4 divisors (see below), whose sum is σ = 102443672052. Its totient is φ = 102436370032.

The previous prime is 102440021009. The next prime is 102440021069. The reversal of 102440021041 is 140120044201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 140120044201 = 1487 ⋅94230023.

It can be written as a sum of positive squares in 2 ways, for example, as 62498000016 + 39942021025 = 249996^2 + 199855^2 .

It is a cyclic number.

It is not a de Polignac number, because 102440021041 - 2⁵ = 102440021009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102440024041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1783090 + ... + 1839643.

It is an arithmetic number, because the mean of its divisors is an integer number (25610918013).

Almost surely, 2^102440021041 is an apocalyptic number.

It is an amenable number.

102440021041 is a deficient number, since it is larger than the sum of its proper divisors (3651011).

102440021041 is an equidigital number, since it uses as much as digits as its factorization.

102440021041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3651010.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 102440021041 its reverse (140120044201), we get a palindrome (242560065242).

The spelling of 102440021041 in words is "one hundred two billion, four hundred forty million, twenty-one thousand, forty-one".