126930305 has 4 divisors (see below), whose sum is σ = 152316372. Its totient is φ = 101544240.

The previous prime is 126930259. The next prime is 126930319. The reversal of 126930305 is 503039621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 63552784 + 63377521 = 7972^2 + 7961^2 .

It is not a de Polignac number, because 126930305 - 2¹² = 126926209 is a prime.

It is a super-2 number, since 2×126930305² = 32222604654786050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12693026 + ... + 12693035.

It is an arithmetic number, because the mean of its divisors is an integer number (38079093).

Almost surely, 2^126930305 is an apocalyptic number.

It is an amenable number.

126930305 is a deficient number, since it is larger than the sum of its proper divisors (25386067).

126930305 is an equidigital number, since it uses as much as digits as its factorization.

126930305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25386066.

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 126930305 is about 11266.3350296359. The cubic root of 126930305 is about 502.5606042265.

Adding to 126930305 its reverse (503039621), we get a palindrome (629969926).

The spelling of 126930305 in words is "one hundred twenty-six million, nine hundred thirty thousand, three hundred five".