1264457 has 4 divisors (see below), whose sum is σ = 1271940. Its totient is φ = 1256976.

The previous prime is 1264451. The next prime is 1264499. The reversal of 1264457 is 7544621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 891136 + 373321 = 944^2 + 611^2 .

It is a cyclic number.

It is not a de Polignac number, because 1264457 - 2¹² = 1260361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1264451) 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, 3482 + ... + 3827.

It is an arithmetic number, because the mean of its divisors is an integer number (317985).

2^1264457 is an apocalyptic number.

It is an amenable number.

1264457 is a deficient number, since it is larger than the sum of its proper divisors (7483).

1264457 is an equidigital number, since it uses as much as digits as its factorization.

1264457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7482.

The product of its digits is 6720, while the sum is 29.

The square root of 1264457 is about 1124.4807690663. The cubic root of 1264457 is about 108.1354325194.

It can be divided in two parts, 126445 and 7, that multiplied together give a triangular number (885115 = T₁₃₃₀).

The spelling of 1264457 in words is "one million, two hundred sixty-four thousand, four hundred fifty-seven".