126397861 has 8 divisors (see below), whose sum is σ = 133869920. Its totient is φ = 119007792.

The previous prime is 126397847. The next prime is 126397871. The reversal of 126397861 is 168793621.

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

It is a de Polignac number, because none of the positive numbers 2^k-126397861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126397841) 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, 17310 + ... + 23503.

It is an arithmetic number, because the mean of its divisors is an integer number (16733740).

Almost surely, 2^126397861 is an apocalyptic number.

It is an amenable number.

126397861 is a deficient number, since it is larger than the sum of its proper divisors (7472059).

126397861 is a wasteful number, since it uses less digits than its factorization.

126397861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40995.

The product of its digits is 108864, while the sum is 43.

The square root of 126397861 is about 11242.6803298858. The cubic root of 126397861 is about 501.8569099008.

The spelling of 126397861 in words is "one hundred twenty-six million, three hundred ninety-seven thousand, eight hundred sixty-one".