126270169 has 9 divisors (see below), whose sum is σ = 134337981. Its totient is φ = 118662720.

The previous prime is 126270149. The next prime is 126270187. The reversal of 126270169 is 961072621.

The square root of 126270169 is 11237.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 41409225 + 84860944 = 6435^2 + 9212^2 .

It is not a de Polignac number, because 126270169 - 2¹⁹ = 125745881 is a prime.

It is a super-2 number, since 2×126270169² = 31888311158577122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126270149) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 190699 + ... + 191359.

Almost surely, 2^126270169 is an apocalyptic number.

126270169 is the 11237-th square number.

126270169 is the 5619-th centered octagonal number.

It is an amenable number.

126270169 is a deficient number, since it is larger than the sum of its proper divisors (8067812).

126270169 is an frugal number, since it uses more digits than its factorization.

126270169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356 (or 678 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The cubic root of 126270169 is about 501.6878545494.

The spelling of 126270169 in words is "one hundred twenty-six million, two hundred seventy thousand, one hundred sixty-nine".