1242241231 has 8 divisors (see below), whose sum is σ = 1548768384. Its totient is φ = 967980120.

The previous prime is 1242241199. The next prime is 1242241237. The reversal of 1242241231 is 1321422421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1242241231 - 2⁵ = 1242241199 is a prime.

It is a super-2 number, since 2×1242241231² = 3086326551992790722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242241237) 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, 8066425 + ... + 8066578.

It is an arithmetic number, because the mean of its divisors is an integer number (193596048).

Almost surely, 2^1242241231 is an apocalyptic number.

1242241231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1242241231 is a deficient number, since it is larger than the sum of its proper divisors (306527153).

1242241231 is a wasteful number, since it uses less digits than its factorization.

1242241231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16133021.

The product of its digits is 768, while the sum is 22.

The square root of 1242241231 is about 35245.4426983121. The cubic root of 1242241231 is about 1074.9839495711.

Adding to 1242241231 its reverse (1321422421), we get a palindrome (2563663652).

The spelling of 1242241231 in words is "one billion, two hundred forty-two million, two hundred forty-one thousand, two hundred thirty-one".