1321541142 has 16 divisors (see below), whose sum is σ = 2649881520. Its totient is φ = 439380512.

The previous prime is 1321541101. The next prime is 1321541147. The reversal of 1321541142 is 2411451231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321541147) 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, 280773 + ... + 285440.

It is an arithmetic number, because the mean of its divisors is an integer number (165617595).

Almost surely, 2^1321541142 is an apocalyptic number.

1321541142 is an abundant number, since it is smaller than the sum of its proper divisors (1328340378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1321541142 is a wasteful number, since it uses less digits than its factorization.

1321541142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566607.

The product of its digits is 960, while the sum is 24.

The square root of 1321541142 is about 36353.0073308935. The cubic root of 1321541142 is about 1097.3880568607.

Adding to 1321541142 its reverse (2411451231), we get a palindrome (3732992373).

The spelling of 1321541142 in words is "one billion, three hundred twenty-one million, five hundred forty-one thousand, one hundred forty-two".