1242432111 has 8 divisors (see below), whose sum is σ = 1657876480. Its totient is φ = 827637912.

The previous prime is 1242432091. The next prime is 1242432119. The reversal of 1242432111 is 1112342421.

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

It is not a de Polignac number, because 1242432111 - 2⁶ = 1242432047 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 (1242432119) 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 7 ways as a sum of consecutive naturals, for example, 158065 + ... + 165738.

It is an arithmetic number, because the mean of its divisors is an integer number (207234560).

Almost surely, 2^1242432111 is an apocalyptic number.

1242432111 is a deficient number, since it is larger than the sum of its proper divisors (415444369).

1242432111 is a wasteful number, since it uses less digits than its factorization.

1242432111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325085.

The product of its digits is 384, while the sum is 21.

The square root of 1242432111 is about 35248.1504621164. The cubic root of 1242432111 is about 1075.0390066250.

Adding to 1242432111 its reverse (1112342421), we get a palindrome (2354774532).

The spelling of 1242432111 in words is "one billion, two hundred forty-two million, four hundred thirty-two thousand, one hundred eleven".