1121542234 has 4 divisors (see below), whose sum is σ = 1682313354. Its totient is φ = 560771116.

The previous prime is 1121542229. The next prime is 1121542243. The reversal of 1121542234 is 4322451211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 881199225 + 240343009 = 29685^2 + 15503^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1121542199 and 1121542208.

It is an unprimeable number.

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, 280385557 + ... + 280385560.

Almost surely, 2^1121542234 is an apocalyptic number.

1121542234 is a deficient number, since it is larger than the sum of its proper divisors (560771120).

1121542234 is an equidigital number, since it uses as much as digits as its factorization.

1121542234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560771119.

The product of its digits is 1920, while the sum is 25.

The square root of 1121542234 is about 33489.4346622931. The cubic root of 1121542234 is about 1038.9752708513.

Adding to 1121542234 its reverse (4322451211), we get a palindrome (5443993445).

The spelling of 1121542234 in words is "one billion, one hundred twenty-one million, five hundred forty-two thousand, two hundred thirty-four".