1320540455 has 16 divisors (see below), whose sum is σ = 1707311424. Its totient is φ = 974730240.

The previous prime is 1320540409. The next prime is 1320540457. The reversal of 1320540455 is 5540450231.

It is not a de Polignac number, because 1320540455 - 2¹² = 1320536359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320540457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 247415 + ... + 252695.

It is an arithmetic number, because the mean of its divisors is an integer number (106706964).

Almost surely, 2^1320540455 is an apocalyptic number.

1320540455 is a deficient number, since it is larger than the sum of its proper divisors (386770969).

1320540455 is a wasteful number, since it uses less digits than its factorization.

1320540455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9146.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 1320540455 is about 36339.2412551501. The cubic root of 1320540455 is about 1097.1110017317. Note that the first 3 decimals are identical.

Adding to 1320540455 its reverse (5540450231), we get a palindrome (6860990686).

The spelling of 1320540455 in words is "one billion, three hundred twenty million, five hundred forty thousand, four hundred fifty-five".