1246431 has 4 divisors (see below), whose sum is σ = 1661912. Its totient is φ = 830952.

The previous prime is 1246429. The next prime is 1246433. The reversal of 1246431 is 1346421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1346421 = 3 ⋅448807.

It is an interprime number because it is at equal distance from previous prime (1246429) and next prime (1246433).

It is not a de Polignac number, because 1246431 - 2¹ = 1246429 is a prime.

It is a super-2 number, since 2×1246431² = 3107180475522, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1246398 and 1246407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1246433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207736 + ... + 207741.

It is an arithmetic number, because the mean of its divisors is an integer number (415478).

2^1246431 is an apocalyptic number.

1246431 is a deficient number, since it is larger than the sum of its proper divisors (415481).

1246431 is an equidigital number, since it uses as much as digits as its factorization.

1246431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415480.

The product of its digits is 576, while the sum is 21.

The square root of 1246431 is about 1116.4367424982. The cubic root of 1246431 is about 107.6191144071.

It can be divided in two parts, 124 and 6431, that added together give a triangular number (6555 = T₁₁₄).

The spelling of 1246431 in words is "one million, two hundred forty-six thousand, four hundred thirty-one".