1240373 has 4 divisors (see below), whose sum is σ = 1270668. Its totient is φ = 1210080.

The previous prime is 1240363. The next prime is 1240387. The reversal of 1240373 is 3730421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3730421 = 191 ⋅19531.

It can be written as a sum of positive squares in 2 ways, for example, as 628849 + 611524 = 793^2 + 782^2 .

It is a cyclic number.

It is not a de Polignac number, because 1240373 - 2⁸ = 1240117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240333) 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, 15086 + ... + 15167.

It is an arithmetic number, because the mean of its divisors is an integer number (317667).

2^1240373 is an apocalyptic number.

It is an amenable number.

1240373 is a deficient number, since it is larger than the sum of its proper divisors (30295).

1240373 is an equidigital number, since it uses as much as digits as its factorization.

1240373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30294.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 1240373 is about 1113.7203419171. The cubic root of 1240373 is about 107.4444782697. Note that the first 4 decimals are identical.

Adding to 1240373 its reverse (3730421), we get a palindrome (4970794).

The spelling of 1240373 in words is "one million, two hundred forty thousand, three hundred seventy-three".