1243407 has 16 divisors (see below), whose sum is σ = 1854720. Its totient is φ = 734400.

The previous prime is 1243393. The next prime is 1243421. The reversal of 1243407 is 7043421.

It is an interprime number because it is at equal distance from previous prime (1243393) and next prime (1243421).

It is not a de Polignac number, because 1243407 - 2⁴ = 1243391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 894 + ... + 1812.

It is an arithmetic number, because the mean of its divisors is an integer number (115920).

2^1243407 is an apocalyptic number.

1243407 is a deficient number, since it is larger than the sum of its proper divisors (611313).

1243407 is a wasteful number, since it uses less digits than its factorization.

1243407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 1243407 is about 1115.0816113630. The cubic root of 1243407 is about 107.5320113789.

Adding to 1243407 its reverse (7043421), we get a palindrome (8286828).

The spelling of 1243407 in words is "one million, two hundred forty-three thousand, four hundred seven".