1121440254 has 32 divisors (see below), whose sum is σ = 2448071424. Its totient is φ = 339650880.

The previous prime is 1121440253. The next prime is 1121440259. The reversal of 1121440254 is 4520441211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121440253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175927 + ... + 182189.

It is an arithmetic number, because the mean of its divisors is an integer number (76502232).

Almost surely, 2^1121440254 is an apocalyptic number.

1121440254 is an abundant number, since it is smaller than the sum of its proper divisors (1326631170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1121440254 is a wasteful number, since it uses less digits than its factorization.

1121440254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8992.

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 1121440254 is about 33487.9120579352. The cubic root of 1121440254 is about 1038.9437791230.

Adding to 1121440254 its reverse (4520441211), we get a palindrome (5641881465).

The spelling of 1121440254 in words is "one billion, one hundred twenty-one million, four hundred forty thousand, two hundred fifty-four".