1125217740 has 24 divisors (see below), whose sum is σ = 3150609840. Its totient is φ = 300058048.

The previous prime is 1125217697. The next prime is 1125217747. The reversal of 1125217740 is 477125211.

It is a super-2 number, since 2×1125217740² = 2532229924821415200, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 1125217698 and 1125217707.

It is not an unprimeable number, because it can be changed into a prime (1125217747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9376755 + ... + 9376874.

It is an arithmetic number, because the mean of its divisors is an integer number (131275410).

Almost surely, 2^1125217740 is an apocalyptic number.

1125217740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1125217740 is an abundant number, since it is smaller than the sum of its proper divisors (2025392100).

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

1125217740 is a wasteful number, since it uses less digits than its factorization.

1125217740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18753641 (or 18753639 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 30.

The square root of 1125217740 is about 33544.2653817310. The cubic root of 1125217740 is about 1040.1090060792.

The spelling of 1125217740 in words is "one billion, one hundred twenty-five million, two hundred seventeen thousand, seven hundred forty".