1240623 has 8 divisors (see below), whose sum is σ = 1838000. Its totient is φ = 827064.

The previous prime is 1240621. The next prime is 1240637. The reversal of 1240623 is 3260421.

It is a happy number.

1240623 is a `hidden beast` number, since 1 + 2 + 40 + 623 = 666.

It is not a de Polignac number, because 1240623 - 2¹ = 1240621 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1240596 and 1240605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22948 + ... + 23001.

It is an arithmetic number, because the mean of its divisors is an integer number (229750).

2^1240623 is an apocalyptic number.

1240623 is a deficient number, since it is larger than the sum of its proper divisors (597377).

1240623 is an equidigital number, since it uses as much as digits as its factorization.

1240623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45958 (or 45952 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1240623 is about 1113.8325726966. The cubic root of 1240623 is about 107.4516963445.

The spelling of 1240623 in words is "one million, two hundred forty thousand, six hundred twenty-three".