1242042341 has 4 divisors (see below), whose sum is σ = 1242158592. Its totient is φ = 1241926092.

The previous prime is 1242042337. The next prime is 1242042353. The reversal of 1242042341 is 1432402421.

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 1242042341 - 2² = 1242042337 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 (1242042301) 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, 40271 + ... + 64076.

It is an arithmetic number, because the mean of its divisors is an integer number (310539648).

Almost surely, 2^1242042341 is an apocalyptic number.

It is an amenable number.

1242042341 is a deficient number, since it is larger than the sum of its proper divisors (116251).

1242042341 is a wasteful number, since it uses less digits than its factorization.

1242042341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116250.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1242042341 is about 35242.6210858387. The cubic root of 1242042341 is about 1074.9265761281.

Adding to 1242042341 its reverse (1432402421), we get a palindrome (2674444762).

The spelling of 1242042341 in words is "one billion, two hundred forty-two million, forty-two thousand, three hundred forty-one".