126633261 has 8 divisors (see below), whose sum is σ = 169856064. Its totient is φ = 83916320.

The previous prime is 126633253. The next prime is 126633307. The reversal of 126633261 is 162336621.

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 126633261 - 2³ = 126633253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126633251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125880 + ... + 126881.

It is an arithmetic number, because the mean of its divisors is an integer number (21232008).

Almost surely, 2^126633261 is an apocalyptic number.

It is an amenable number.

126633261 is a deficient number, since it is larger than the sum of its proper divisors (43222803).

126633261 is a wasteful number, since it uses less digits than its factorization.

126633261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252931.

The product of its digits is 7776, while the sum is 30.

The square root of 126633261 is about 11253.1444938737. The cubic root of 126633261 is about 502.1682649954.

Adding to 126633261 its reverse (162336621), we get a palindrome (288969882).

The spelling of 126633261 in words is "one hundred twenty-six million, six hundred thirty-three thousand, two hundred sixty-one".