1125424380 has 96 divisors (see below), whose sum is σ = 3277790208. Its totient is φ = 288288000.

The previous prime is 1125424379. The next prime is 1125424381. The reversal of 1125424380 is 834245211.

It is an interprime number because it is at equal distance from previous prime (1125424379) and next prime (1125424381).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1125424381) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 153805 + ... + 160955.

It is an arithmetic number, because the mean of its divisors is an integer number (34143648).

Almost surely, 2^1125424380 is an apocalyptic number.

1125424380 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 1125424380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1638895104).

1125424380 is an abundant number, since it is smaller than the sum of its proper divisors (2152365828).

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

1125424380 is a wasteful number, since it uses less digits than its factorization.

1125424380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7267 (or 7265 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 1125424380 is about 33547.3453495206. The cubic root of 1125424380 is about 1040.1726722663.

Adding to 1125424380 its reverse (834245211), we get a palindrome (1959669591).

The spelling of 1125424380 in words is "one billion, one hundred twenty-five million, four hundred twenty-four thousand, three hundred eighty".