1240512 has 112 divisors (see below), whose sum is σ = 4096512. Its totient is φ = 322560.

The previous prime is 1240511. The next prime is 1240517. The reversal of 1240512 is 2150421.

It is a tau number, because it is divible by the number of its divisors (112).

It is a junction number, because it is equal to n+sod(n) for n = 1240491 and 1240500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17437 + ... + 17507.

It is an arithmetic number, because the mean of its divisors is an integer number (36576).

2^1240512 is an apocalyptic number.

1240512 is a gapful number since it is divisible by the number (12) 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 1240512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2048256).

1240512 is an abundant number, since it is smaller than the sum of its proper divisors (2856000).

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

1240512 is a wasteful number, since it uses less digits than its factorization.

1240512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106 (or 96 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 1240512 is about 1113.7827436264. The cubic root of 1240512 is about 107.4484916390.

Adding to 1240512 its reverse (2150421), we get a palindrome (3390933).

Subtracting 1240512 from its reverse (2150421), we obtain a palindrome (909909).

The spelling of 1240512 in words is "one million, two hundred forty thousand, five hundred twelve".