1242131141 has 4 divisors (see below), whose sum is σ = 1257854400. Its totient is φ = 1226407884.

The previous prime is 1242131089. The next prime is 1242131147. The reversal of 1242131141 is 1411312421.

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 1242131141 - 2³⁰ = 168389317 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 (1242131147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7861511 + ... + 7861668.

It is an arithmetic number, because the mean of its divisors is an integer number (314463600).

Almost surely, 2^1242131141 is an apocalyptic number.

It is an amenable number.

1242131141 is a deficient number, since it is larger than the sum of its proper divisors (15723259).

1242131141 is an equidigital number, since it uses as much as digits as its factorization.

1242131141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15723258.

The product of its digits is 192, while the sum is 20.

The square root of 1242131141 is about 35243.8809015125. The cubic root of 1242131141 is about 1074.9521928622.

Adding to 1242131141 its reverse (1411312421), we get a palindrome (2653443562).

The spelling of 1242131141 in words is "one billion, two hundred forty-two million, one hundred thirty-one thousand, one hundred forty-one".