1213407 has 16 divisors (see below), whose sum is σ = 1936480. Its totient is φ = 746496.

The previous prime is 1213379. The next prime is 1213427. The reversal of 1213407 is 7043121.

It is not a de Polignac number, because 1213407 - 2⁸ = 1213151 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1213407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213427) 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, 1378 + ... + 2079.

It is an arithmetic number, because the mean of its divisors is an integer number (121030).

2^1213407 is an apocalyptic number.

1213407 is a deficient number, since it is larger than the sum of its proper divisors (723073).

1213407 is a wasteful number, since it uses less digits than its factorization.

1213407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3479 (or 3473 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 1213407 is about 1101.5475477709. The cubic root of 1213407 is about 106.6601439154.

Adding to 1213407 its reverse (7043121), we get a palindrome (8256528).

The spelling of 1213407 in words is "one million, two hundred thirteen thousand, four hundred seven".