126398787 has 8 divisors (see below), whose sum is σ = 168659280. Its totient is φ = 84202080.

The previous prime is 126398747. The next prime is 126398807. The reversal of 126398787 is 787893621.

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

It is not a de Polignac number, because 126398787 - 2²⁴ = 109621571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (126398707) 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, 11112 + ... + 19397.

It is an arithmetic number, because the mean of its divisors is an integer number (21082410).

Almost surely, 2^126398787 is an apocalyptic number.

126398787 is a deficient number, since it is larger than the sum of its proper divisors (42260493).

126398787 is a wasteful number, since it uses less digits than its factorization.

126398787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31893.

The product of its digits is 1016064, while the sum is 51.

The square root of 126398787 is about 11242.7215121607. The cubic root of 126398787 is about 501.8581354446.

The spelling of 126398787 in words is "one hundred twenty-six million, three hundred ninety-eight thousand, seven hundred eighty-seven".