1121254145 has 16 divisors (see below), whose sum is σ = 1471512960. Its totient is φ = 813408000.

The previous prime is 1121254133. The next prime is 1121254229. The reversal of 1121254145 is 5414521211.

It is a happy number.

It is not a de Polignac number, because 1121254145 - 2²² = 1117059841 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3365 + ... + 47474.

It is an arithmetic number, because the mean of its divisors is an integer number (91969560).

Almost surely, 2^1121254145 is an apocalyptic number.

It is an amenable number.

1121254145 is a deficient number, since it is larger than the sum of its proper divisors (350258815).

1121254145 is a wasteful number, since it uses less digits than its factorization.

1121254145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51256.

The product of its digits is 1600, while the sum is 26.

The square root of 1121254145 is about 33485.1331937025. The cubic root of 1121254145 is about 1038.8863031870.

Adding to 1121254145 its reverse (5414521211), we get a palindrome (6535775356).

The spelling of 1121254145 in words is "one billion, one hundred twenty-one million, two hundred fifty-four thousand, one hundred forty-five".