1125043542 has 96 divisors (see below), whose sum is σ = 2945030400. Its totient is φ = 303217344.

The previous prime is 1125043541. The next prime is 1125043657. The reversal of 1125043542 is 2453405211.

1125043542 is a `hidden beast` number, since 112 + 5 + 0 + 4 + 3 + 542 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125043541) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 643113 + ... + 644859.

It is an arithmetic number, because the mean of its divisors is an integer number (30677400).

Almost surely, 2^1125043542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1125043542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1472515200).

1125043542 is an abundant number, since it is smaller than the sum of its proper divisors (1819986858).

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

1125043542 is a wasteful number, since it uses less digits than its factorization.

1125043542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2050 (or 2047 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 1125043542 is about 33541.6687420289. The cubic root of 1125043542 is about 1040.0553292802.

Adding to 1125043542 its reverse (2453405211), we get a palindrome (3578448753).

The spelling of 1125043542 in words is "one billion, one hundred twenty-five million, forty-three thousand, five hundred forty-two".