1142523105 has 16 divisors (see below), whose sum is σ = 1924249920. Its totient is φ = 577274688.

The previous prime is 1142523089. The next prime is 1142523113. The reversal of 1142523105 is 5013252411.

It is a happy number.

It is not a de Polignac number, because 1142523105 - 2⁴ = 1142523089 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2004142 + ... + 2004711.

It is an arithmetic number, because the mean of its divisors is an integer number (120265620).

Almost surely, 2^1142523105 is an apocalyptic number.

1142523105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1142523105 is a deficient number, since it is larger than the sum of its proper divisors (781726815).

1142523105 is a wasteful number, since it uses less digits than its factorization.

1142523105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4008880.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1142523105 is about 33801.2293415491. The cubic root of 1142523105 is about 1045.4140450038.

Adding to 1142523105 its reverse (5013252411), we get a palindrome (6155775516).

The spelling of 1142523105 in words is "one billion, one hundred forty-two million, five hundred twenty-three thousand, one hundred five".