1320542141 has 4 divisors (see below), whose sum is σ = 1320689472. Its totient is φ = 1320394812.

The previous prime is 1320542137. The next prime is 1320542143. The reversal of 1320542141 is 1412450231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1320542141 - 2² = 1320542137 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320542143) 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, 59285 + ... + 78458.

It is an arithmetic number, because the mean of its divisors is an integer number (330172368).

Almost surely, 2^1320542141 is an apocalyptic number.

It is an amenable number.

1320542141 is a deficient number, since it is larger than the sum of its proper divisors (147331).

1320542141 is an equidigital number, since it uses as much as digits as its factorization.

1320542141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147330.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 1320542141 is about 36339.2644532054. The cubic root of 1320542141 is about 1097.1114686437. Note that the first 3 decimals are identical.

Adding to 1320542141 its reverse (1412450231), we get a palindrome (2732992372).

The spelling of 1320542141 in words is "one billion, three hundred twenty million, five hundred forty-two thousand, one hundred forty-one".