126886987 has 2 divisors, whose sum is σ = 126886988. Its totient is φ = 126886986.

The previous prime is 126886979. The next prime is 126887003. The reversal of 126886987 is 789688621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126886987 - 2³ = 126886979 is a prime.

It is a super-2 number, since 2×126886987² = 32200614939876338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (126886927) 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 as a sum of consecutive naturals, namely, 63443493 + 63443494.

It is an arithmetic number, because the mean of its divisors is an integer number (63443494).

Almost surely, 2^126886987 is an apocalyptic number.

126886987 is a deficient number, since it is larger than the sum of its proper divisors (1).

126886987 is an equidigital number, since it uses as much as digits as its factorization.

126886987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2322432, while the sum is 55.

The square root of 126886987 is about 11264.4124125495. The cubic root of 126886987 is about 502.5034274495.

The spelling of 126886987 in words is "one hundred twenty-six million, eight hundred eighty-six thousand, nine hundred eighty-seven".