1312458 has 16 divisors (see below), whose sum is σ = 3000000. Its totient is φ = 374976.

The previous prime is 1312411. The next prime is 1312459. The reversal of 1312458 is 8542131.

1312458 is nontrivially palindromic in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15583 + ... + 15666.

It is an arithmetic number, because the mean of its divisors is an integer number (187500).

2^1312458 is an apocalyptic number.

1312458 is an abundant number, since it is smaller than the sum of its proper divisors (1687542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1312458 is a wasteful number, since it uses less digits than its factorization.

1312458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31261.

The product of its digits is 960, while the sum is 24.

The square root of 1312458 is about 1145.6255932895. The cubic root of 1312458 is about 109.4868106130.

Adding to 1312458 its reverse (8542131), we get a palindrome (9854589).

It can be divided in two parts, 1312 and 458, that added together give a triangular number (1770 = T₅₉).

The spelling of 1312458 in words is "one million, three hundred twelve thousand, four hundred fifty-eight".