1240772 has 24 divisors (see below), whose sum is σ = 2370816. Its totient is φ = 564768.

The previous prime is 1240769. The next prime is 1240777. The reversal of 1240772 is 2770421.

It is a Smith number, since the sum of its digits (23) coincides with the sum of the digits of its prime factors.

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 7 ways as a sum of consecutive naturals, for example, 5453 + ... + 5675.

It is an arithmetic number, because the mean of its divisors is an integer number (98784).

2^1240772 is an apocalyptic number.

It is an amenable number.

1240772 is a deficient number, since it is larger than the sum of its proper divisors (1130044).

1240772 is a wasteful number, since it uses less digits than its factorization.

1240772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347 (or 345 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 23.

The square root of 1240772 is about 1113.8994568631. The cubic root of 1240772 is about 107.4559978558.

The spelling of 1240772 in words is "one million, two hundred forty thousand, seven hundred seventy-two".