1321542251041 has 8 divisors (see below), whose sum is σ = 1400626805760. Its totient is φ = 1242607338048.

The previous prime is 1321542251033. The next prime is 1321542251053. The reversal of 1321542251041 is 1401522451231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1321542251041 - 2³ = 1321542251033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1321542250994 and 1321542251012.

It is not an unprimeable number, because it can be changed into a prime (1321542254041) 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, 37392241 + ... + 37427566.

It is an arithmetic number, because the mean of its divisors is an integer number (175078350720).

Almost surely, 2^{1321542251041} is an apocalyptic number.

It is an amenable number.

1321542251041 is a deficient number, since it is larger than the sum of its proper divisors (79084554719).

1321542251041 is a wasteful number, since it uses less digits than its factorization.

1321542251041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74820863.

The product of its (nonzero) digits is 9600, while the sum is 31.

The spelling of 1321542251041 in words is "one trillion, three hundred twenty-one billion, five hundred forty-two million, two hundred fifty-one thousand, forty-one".