1331141542 has 4 divisors (see below), whose sum is σ = 1996712316. Its totient is φ = 665570770.

The previous prime is 1331141509. The next prime is 1331141543. The reversal of 1331141542 is 2451411331.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331141543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332785384 + ... + 332785387.

It is an arithmetic number, because the mean of its divisors is an integer number (499178079).

Almost surely, 2^1331141542 is an apocalyptic number.

1331141542 is a deficient number, since it is larger than the sum of its proper divisors (665570774).

1331141542 is an equidigital number, since it uses as much as digits as its factorization.

1331141542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665570773.

The product of its digits is 1440, while the sum is 25.

The square root of 1331141542 is about 36484.8124841008. The cubic root of 1331141542 is about 1100.0389909044.

Adding to 1331141542 its reverse (2451411331), we get a palindrome (3782552873).

The spelling of 1331141542 in words is "one billion, three hundred thirty-one million, one hundred forty-one thousand, five hundred forty-two".