1021432140041 has 4 divisors (see below), whose sum is σ = 1038176929284. Its totient is φ = 1004687350800.

The previous prime is 1021432140031. The next prime is 1021432140049. The reversal of 1021432140041 is 1400412341201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22823655625 + 998608484416 = 151075^2 + 999304^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021432140041 - 2¹⁰ = 1021432139017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021432139989 and 1021432140016.

It is not an unprimeable number, because it can be changed into a prime (1021432140049) 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, 8372394530 + ... + 8372394651.

It is an arithmetic number, because the mean of its divisors is an integer number (259544232321).

Almost surely, 2^{1021432140041} is an apocalyptic number.

It is an amenable number.

1021432140041 is a deficient number, since it is larger than the sum of its proper divisors (16744789243).

1021432140041 is an equidigital number, since it uses as much as digits as its factorization.

1021432140041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16744789242.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 1021432140041 its reverse (1400412341201), we get a palindrome (2421844481242).

The spelling of 1021432140041 in words is "one trillion, twenty-one billion, four hundred thirty-two million, one hundred forty thousand, forty-one".