1124720 has 40 divisors (see below), whose sum is σ = 2772144. Its totient is φ = 422912.

The previous prime is 1124719. The next prime is 1124741. The reversal of 1124720 is 274211.

1124720 = T₁₈₄ + T₁₈₅ + ... + T₂₃₄.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 947 + ... + 1773.

2^1124720 is an apocalyptic number.

1124720 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 1124720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1386072).

1124720 is an abundant number, since it is smaller than the sum of its proper divisors (1647424).

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

1124720 is a wasteful number, since it uses less digits than its factorization.

1124720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857 (or 851 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 1124720 is about 1060.5281703001. The cubic root of 1124720 is about 103.9955619408.

Adding to 1124720 its reverse (274211), we get a palindrome (1398931).

The spelling of 1124720 in words is "one million, one hundred twenty-four thousand, seven hundred twenty".