1125742740 has 96 divisors (see below), whose sum is σ = 3239381376. Its totient is φ = 291932160.

The previous prime is 1125742729. The next prime is 1125742741. The reversal of 1125742740 is 472475211.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125742741) by changing a digit.

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 in 31 ways as a sum of consecutive naturals, for example, 1089264 + ... + 1090296.

It is an arithmetic number, because the mean of its divisors is an integer number (33743556).

Almost surely, 2^1125742740 is an apocalyptic number.

1125742740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1125742740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1619690688).

1125742740 is an abundant number, since it is smaller than the sum of its proper divisors (2113638636).

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

1125742740 is a wasteful number, since it uses less digits than its factorization.

1125742740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1529 (or 1527 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 1125742740 is about 33552.0899498079. The cubic root of 1125742740 is about 1040.2707443529.

The spelling of 1125742740 in words is "one billion, one hundred twenty-five million, seven hundred forty-two thousand, seven hundred forty".