1125021744 has 320 divisors, whose sum is σ = 4159733760. Its totient is φ = 282528000.

The previous prime is 1125021743. The next prime is 1125021763. The reversal of 1125021744 is 4471205211.

1125021744 is a `hidden beast` number, since 112 + 502 + 1 + 7 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1125021743) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1030639 + ... + 1031729.

It is an arithmetic number, because the mean of its divisors is an integer number (12999168).

Almost surely, 2^1125021744 is an apocalyptic number.

1125021744 is a gapful number since it is divisible by the number (14) 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 1125021744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2079866880).

1125021744 is an abundant number, since it is smaller than the sum of its proper divisors (3034712016).

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

1125021744 is a wasteful number, since it uses less digits than its factorization.

1125021744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157 (or 1145 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 1125021744 is about 33541.3438013446. The cubic root of 1125021744 is about 1040.0486121261.

Adding to 1125021744 its reverse (4471205211), we get a palindrome (5596226955).

The spelling of 1125021744 in words is "one billion, one hundred twenty-five million, twenty-one thousand, seven hundred forty-four".