126100005 has 8 divisors (see below), whose sum is σ = 201760032. Its totient is φ = 67253328.

The previous prime is 126100003. The next prime is 126100021. The reversal of 126100005 is 500001621.

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

It is not a de Polignac number, because 126100005 - 2¹ = 126100003 is a prime.

It is a super-2 number, since 2×126100005² = 31802422522000050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 8406667 = 126100005 / (1 + 2 + 6 + 1 + 0 + 0 + 0 + 0 + 5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126100003) 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, 4203319 + ... + 4203348.

It is an arithmetic number, because the mean of its divisors is an integer number (25220004).

Almost surely, 2^126100005 is an apocalyptic number.

126100005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

126100005 is a deficient number, since it is larger than the sum of its proper divisors (75660027).

126100005 is an equidigital number, since it uses as much as digits as its factorization.

126100005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8406675.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 126100005 is about 11229.4258535332. The cubic root of 126100005 is about 501.4623919828.

Adding to 126100005 its reverse (500001621), we get a palindrome (626101626).

The spelling of 126100005 in words is "one hundred twenty-six million, one hundred thousand, five".