1266442 has 4 divisors (see below), whose sum is σ = 1899666. Its totient is φ = 633220.

The previous prime is 1266431. The next prime is 1266451. The reversal of 1266442 is 2446621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2446621 = 1213 ⋅2017.

It can be written as a sum of positive squares in only one way, i.e., 1256641 + 9801 = 1121^2 + 99^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 316609 + ... + 316612.

2^1266442 is an apocalyptic number.

1266442 is a deficient number, since it is larger than the sum of its proper divisors (633224).

1266442 is an equidigital number, since it uses as much as digits as its factorization.

1266442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633223.

The product of its digits is 2304, while the sum is 25.

The square root of 1266442 is about 1125.3630525302. The cubic root of 1266442 is about 108.1919881818.

The spelling of 1266442 in words is "one million, two hundred sixty-six thousand, four hundred forty-two".