1240770 has 32 divisors (see below), whose sum is σ = 3032640. Its totient is φ = 324800.

The previous prime is 1240769. The next prime is 1240777. The reversal of 1240770 is 770421.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (1240777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1420 + ... + 2120.

It is an arithmetic number, because the mean of its divisors is an integer number (94770).

2^1240770 is an apocalyptic number.

1240770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1240770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1516320).

1240770 is an abundant number, since it is smaller than the sum of its proper divisors (1791870).

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

1240770 is a wasteful number, since it uses less digits than its factorization.

1240770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 770.

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 1240770 is about 1113.8985591157. The cubic root of 1240770 is about 107.4559401197.

The spelling of 1240770 in words is "one million, two hundred forty thousand, seven hundred seventy".