126900217 has 8 divisors (see below), whose sum is σ = 129002112. Its totient is φ = 124807200.

The previous prime is 126900199. The next prime is 126900233. The reversal of 126900217 is 712009621.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 126900217 - 2¹⁵ = 126867449 is a prime.

It is a super-2 number, since 2×126900217² = 32207330149294178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126900287) 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, 30492 + ... + 34402.

It is an arithmetic number, because the mean of its divisors is an integer number (16125264).

Almost surely, 2^126900217 is an apocalyptic number.

It is an amenable number.

126900217 is a deficient number, since it is larger than the sum of its proper divisors (2101895).

126900217 is an equidigital number, since it uses as much as digits as its factorization.

126900217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4439.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 126900217 is about 11264.9996449179. Note that the first 3 decimals coincide. The cubic root of 126900217 is about 502.5208915186.

Adding to 126900217 its reverse (712009621), we get a palindrome (838909838).

The spelling of 126900217 in words is "one hundred twenty-six million, nine hundred thousand, two hundred seventeen".