126036866 has 4 divisors (see below), whose sum is σ = 189055302. Its totient is φ = 63018432.

The previous prime is 126036851. The next prime is 126036881. The reversal of 126036866 is 668630621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 668630621 = 17 ⋅39331213.

It is an interprime number because it is at equal distance from previous prime (126036851) and next prime (126036881).

It can be written as a sum of positive squares in only one way, i.e., 125910841 + 126025 = 11221^2 + 355^2 .

It is a super-2 number, since 2×126036866² = 31770583182203912, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31509215 + ... + 31509218.

Almost surely, 2^126036866 is an apocalyptic number.

126036866 is a deficient number, since it is larger than the sum of its proper divisors (63018436).

126036866 is an equidigital number, since it uses as much as digits as its factorization.

126036866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63018435.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 126036866 is about 11226.6141823793. The cubic root of 126036866 is about 501.3786829724.

The spelling of 126036866 in words is "one hundred twenty-six million, thirty-six thousand, eight hundred sixty-six".