1124121243 has 32 divisors (see below), whose sum is σ = 1840817664. Its totient is φ = 595533312.

The previous prime is 1124121227. The next prime is 1124121281. The reversal of 1124121243 is 3421214211.

It is not a de Polignac number, because 1124121243 - 2⁴ = 1124121227 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1124121283) 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 31 ways as a sum of consecutive naturals, for example, 421 + ... + 47417.

It is an arithmetic number, because the mean of its divisors is an integer number (57525552).

Almost surely, 2^1124121243 is an apocalyptic number.

1124121243 is a deficient number, since it is larger than the sum of its proper divisors (716696421).

1124121243 is a wasteful number, since it uses less digits than its factorization.

1124121243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47091.

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

The square root of 1124121243 is about 33527.9173674715. The cubic root of 1124121243 is about 1039.7710427321.

Adding to 1124121243 its reverse (3421214211), we get a palindrome (4545335454).

The spelling of 1124121243 in words is "one billion, one hundred twenty-four million, one hundred twenty-one thousand, two hundred forty-three".