1321502141 has 2 divisors, whose sum is σ = 1321502142. Its totient is φ = 1321502140.

The previous prime is 1321502129. The next prime is 1321502153. The reversal of 1321502141 is 1412051231.

It is a balanced prime because it is at equal distance from previous prime (1321502129) and next prime (1321502153).

It can be written as a sum of positive squares in only one way, i.e., 848265625 + 473236516 = 29125^2 + 21754^2 .

It is a cyclic number.

It is not a de Polignac number, because 1321502141 - 2¹⁰ = 1321501117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1321504141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660751070 + 660751071.

It is an arithmetic number, because the mean of its divisors is an integer number (660751071).

Almost surely, 2^1321502141 is an apocalyptic number.

It is an amenable number.

1321502141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321502141 is an equidigital number, since it uses as much as digits as its factorization.

1321502141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 1321502141 is about 36352.4709063909. The cubic root of 1321502141 is about 1097.3772614716.

Adding to 1321502141 its reverse (1412051231), we get a palindrome (2733553372).

The spelling of 1321502141 in words is "one billion, three hundred twenty-one million, five hundred two thousand, one hundred forty-one".