126351987 has 8 divisors (see below), whose sum is σ = 168831936. Its totient is φ = 84053352.

The previous prime is 126351971. The next prime is 126351991. The reversal of 126351987 is 789153621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 126351987 - 2⁴ = 126351971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126351287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43693 + ... + 46494.

It is an arithmetic number, because the mean of its divisors is an integer number (21103992).

Almost surely, 2^126351987 is an apocalyptic number.

126351987 is a deficient number, since it is larger than the sum of its proper divisors (42479949).

126351987 is an equidigital number, since it uses as much as digits as its factorization.

126351987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90657.

The product of its digits is 90720, while the sum is 42.

The square root of 126351987 is about 11240.6399728841. The cubic root of 126351987 is about 501.7961890167.

The spelling of 126351987 in words is "one hundred twenty-six million, three hundred fifty-one thousand, nine hundred eighty-seven".