126730987 has 2 divisors, whose sum is σ = 126730988. Its totient is φ = 126730986.

The previous prime is 126730979. The next prime is 126730991. The reversal of 126730987 is 789037621.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 126730987 - 2³ = 126730979 is a prime.

It is not a weakly prime, because it can be changed into another prime (126730787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63365493 + 63365494.

It is an arithmetic number, because the mean of its divisors is an integer number (63365494).

Almost surely, 2^126730987 is an apocalyptic number.

126730987 is a deficient number, since it is larger than the sum of its proper divisors (1).

126730987 is an equidigital number, since it uses as much as digits as its factorization.

126730987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 126730987 is about 11257.4858205551. The cubic root of 126730987 is about 502.2974103105.

The spelling of 126730987 in words is "one hundred twenty-six million, seven hundred thirty thousand, nine hundred eighty-seven".