1124640 has 144 divisors (see below), whose sum is σ = 4245696. Its totient is φ = 268800.

The previous prime is 1124639. The next prime is 1124647. The reversal of 1124640 is 464211.

1124640 is a `hidden beast` number, since 1 + 1 + 24 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1124647) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15805 + ... + 15875.

It is an arithmetic number, because the mean of its divisors is an integer number (29484).

2^1124640 is an apocalyptic number.

1124640 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 1124640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2122848).

1124640 is an abundant number, since it is smaller than the sum of its proper divisors (3121056).

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

1124640 is a wasteful number, since it uses less digits than its factorization.

1124640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103 (or 92 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1124640 is about 1060.4904525737. The cubic root of 1124640 is about 103.9930961887.

Adding to 1124640 its reverse (464211), we get a palindrome (1588851).

It can be divided in two parts, 1124 and 640, that added together give a square (1764 = 42²).

The spelling of 1124640 in words is "one million, one hundred twenty-four thousand, six hundred forty".