1240536 has 64 divisors (see below), whose sum is σ = 3502080. Its totient is φ = 362880.

The previous prime is 1240523. The next prime is 1240543. The reversal of 1240536 is 6350421.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9705 + ... + 9831.

It is an arithmetic number, because the mean of its divisors is an integer number (54720).

2^1240536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1240536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1751040).

1240536 is an abundant number, since it is smaller than the sum of its proper divisors (2261544).

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

1240536 is a wasteful number, since it uses less digits than its factorization.

1240536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1240536 is about 1113.7935176683. The cubic root of 1240536 is about 107.4491845645.

Adding to 1240536 its reverse (6350421), we get a palindrome (7590957).

The spelling of 1240536 in words is "one million, two hundred forty thousand, five hundred thirty-six".