1121250138 has 32 divisors (see below), whose sum is σ = 2346731136. Its totient is φ = 356471808.

The previous prime is 1121250133. The next prime is 1121250149. The reversal of 1121250138 is 8310521211.

It is not an unprimeable number, because it can be changed into a prime (1121250131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37206 + ... + 60222.

It is an arithmetic number, because the mean of its divisors is an integer number (73335348).

Almost surely, 2^1121250138 is an apocalyptic number.

1121250138 is an abundant number, since it is smaller than the sum of its proper divisors (1225480998).

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

1121250138 is a wasteful number, since it uses less digits than its factorization.

1121250138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23398.

The product of its (nonzero) digits is 480, while the sum is 24.

The square root of 1121250138 is about 33485.0733611261. The cubic root of 1121250138 is about 1038.8850656375.

Adding to 1121250138 its reverse (8310521211), we get a palindrome (9431771349).

The spelling of 1121250138 in words is "one billion, one hundred twenty-one million, two hundred fifty thousand, one hundred thirty-eight".