1145724 has 24 divisors (see below), whose sum is σ = 2690688. Its totient is φ = 379440.

The previous prime is 1145723. The next prime is 1145741. The reversal of 1145724 is 4275411.

It is a junction number, because it is equal to n+sod(n) for n = 1145694 and 1145703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145723) 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 7 ways as a sum of consecutive naturals, for example, 3529 + ... + 3839.

It is an arithmetic number, because the mean of its divisors is an integer number (112112).

2^1145724 is an apocalyptic number.

It is an amenable number.

1145724 is an abundant number, since it is smaller than the sum of its proper divisors (1544964).

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

1145724 is a wasteful number, since it uses less digits than its factorization.

1145724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625 (or 623 counting only the distinct ones).

The product of its digits is 1120, while the sum is 24.

The square root of 1145724 is about 1070.3849774731. The cubic root of 1145724 is about 104.6389412728.

The spelling of 1145724 in words is "one million, one hundred forty-five thousand, seven hundred twenty-four".