126380987 has 2 divisors, whose sum is σ = 126380988. Its totient is φ = 126380986.

The previous prime is 126380963. The next prime is 126381019. The reversal of 126380987 is 789083621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 126380987 - 2¹⁸ = 126118843 is a prime.

It is not a weakly prime, because it can be changed into another prime (126380687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63190493 + 63190494.

It is an arithmetic number, because the mean of its divisors is an integer number (63190494).

Almost surely, 2^126380987 is an apocalyptic number.

126380987 is a deficient number, since it is larger than the sum of its proper divisors (1).

126380987 is an equidigital number, since it uses as much as digits as its factorization.

126380987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 126380987 is about 11241.9298610159. The cubic root of 126380987 is about 501.8345764259.

The spelling of 126380987 in words is "one hundred twenty-six million, three hundred eighty thousand, nine hundred eighty-seven".