1166426 has 4 divisors (see below), whose sum is σ = 1749642. Its totient is φ = 583212.

The previous prime is 1166413. The next prime is 1166441. The reversal of 1166426 is 6246611.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 724201 + 442225 = 851^2 + 665^2 .

It is a super-2 number, since 2×1166426² = 2721099226952, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1166395 and 1166404.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 291605 + ... + 291608.

2^1166426 is an apocalyptic number.

1166426 is a deficient number, since it is larger than the sum of its proper divisors (583216).

1166426 is an equidigital number, since it uses as much as digits as its factorization.

1166426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583215.

The product of its digits is 1728, while the sum is 26.

The square root of 1166426 is about 1080.0120369700. The cubic root of 1166426 is about 105.2654207145.

Subtracting from 1166426 its sum of digits (26), we obtain a square (1166400 = 1080²).

The spelling of 1166426 in words is "one million, one hundred sixty-six thousand, four hundred twenty-six".