1154231142 has 16 divisors (see below), whose sum is σ = 2346306672. Its totient is φ = 378436320.

The previous prime is 1154231137. The next prime is 1154231161. The reversal of 1154231142 is 2411324511.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1576453 + ... + 1577184.

It is an arithmetic number, because the mean of its divisors is an integer number (146644167).

Almost surely, 2^1154231142 is an apocalyptic number.

1154231142 is an abundant number, since it is smaller than the sum of its proper divisors (1192075530).

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

1154231142 is a wasteful number, since it uses less digits than its factorization.

1154231142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3153703.

The product of its digits is 960, while the sum is 24.

The square root of 1154231142 is about 33973.9774239049. The cubic root of 1154231142 is about 1048.9728858499.

Adding to 1154231142 its reverse (2411324511), we get a palindrome (3565555653).

The spelling of 1154231142 in words is "one billion, one hundred fifty-four million, two hundred thirty-one thousand, one hundred forty-two".