1240730 has 16 divisors (see below), whose sum is σ = 2276424. Its totient is φ = 486720.

The previous prime is 1240717. The next prime is 1240739. The reversal of 1240730 is 370421.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1151329 + 89401 = 1073^2 + 299^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1240699 and 1240708.

It is not an unprimeable number, because it can be changed into a prime (1240739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 641 + ... + 1700.

2^1240730 is an apocalyptic number.

1240730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1240730 is a deficient number, since it is larger than the sum of its proper divisors (1035694).

1240730 is a wasteful number, since it uses less digits than its factorization.

1240730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2401.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 1240730 is about 1113.8806040146. The cubic root of 1240730 is about 107.4547853841.

The spelling of 1240730 in words is "one million, two hundred forty thousand, seven hundred thirty".