126612261 has 16 divisors (see below), whose sum is σ = 192644800. Its totient is φ = 82126224.

The previous prime is 126612259. The next prime is 126612281. The reversal of 126612261 is 162216621.

126612261 is a `hidden beast` number, since 1 + 26 + 612 + 26 + 1 = 666.

It is not a de Polignac number, because 126612261 - 2¹ = 126612259 is a prime.

It is a super-3 number, since 3×126612261³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126612221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62371 + ... + 64368.

It is an arithmetic number, because the mean of its divisors is an integer number (12040300).

Almost surely, 2^126612261 is an apocalyptic number.

It is an amenable number.

126612261 is a deficient number, since it is larger than the sum of its proper divisors (66032539).

126612261 is a wasteful number, since it uses less digits than its factorization.

126612261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126785 (or 126779 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 126612261 is about 11252.2113826572. The cubic root of 126612261 is about 502.1405047359.

Adding to 126612261 its reverse (162216621), we get a palindrome (288828882).

The spelling of 126612261 in words is "one hundred twenty-six million, six hundred twelve thousand, two hundred sixty-one".