1111243412 has 6 divisors (see below), whose sum is σ = 1944675978. Its totient is φ = 555621704.

The previous prime is 1111243411. The next prime is 1111243439. The reversal of 1111243412 is 2143421111.

It can be written as a sum of positive squares in only one way, i.e., 581967376 + 529276036 = 24124^2 + 23006^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111243411) 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 as a sum of consecutive naturals, namely, 138905423 + ... + 138905430.

It is an arithmetic number, because the mean of its divisors is an integer number (324112663).

Almost surely, 2^1111243412 is an apocalyptic number.

It is an amenable number.

1111243412 is a deficient number, since it is larger than the sum of its proper divisors (833432566).

1111243412 is a wasteful number, since it uses less digits than its factorization.

1111243412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277810857 (or 277810855 counting only the distinct ones).

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

The square root of 1111243412 is about 33335.3177875958. The cubic root of 1111243412 is about 1035.7852759820.

Adding to 1111243412 its reverse (2143421111), we get a palindrome (3254664523).

The spelling of 1111243412 in words is "one billion, one hundred eleven million, two hundred forty-three thousand, four hundred twelve".