1012240 has 20 divisors (see below), whose sum is σ = 2353644. Its totient is φ = 404864.

The previous prime is 1012229. The next prime is 1012241. The reversal of 1012240 is 422101.

It can be written as a sum of positive squares in 2 ways, for example, as 121104 + 891136 = 348^2 + 944^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1012241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6247 + ... + 6406.

2^1012240 is an apocalyptic number.

1012240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012240 is an abundant number, since it is smaller than the sum of its proper divisors (1341404).

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

1012240 is a wasteful number, since it uses less digits than its factorization.

1012240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12666 (or 12660 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 1012240 is about 1006.1013865411. The cubic root of 1012240 is about 100.4063465880.

Adding to 1012240 its reverse (422101), we get a palindrome (1434341).

The spelling of 1012240 in words is "one million, twelve thousand, two hundred forty".