1226540133 has 48 divisors (see below), whose sum is σ = 2233760256. Its totient is φ = 631169280.

The previous prime is 1226540131. The next prime is 1226540173. The reversal of 1226540133 is 3310456221.

1226540133 is a `hidden beast` number, since 1 + 2 + 2 + 654 + 0 + 1 + 3 + 3 = 666.

It is not a de Polignac number, because 1226540133 - 2¹ = 1226540131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1226540097 and 1226540106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226540131) 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 47 ways as a sum of consecutive naturals, for example, 15316 + ... + 51842.

It is an arithmetic number, because the mean of its divisors is an integer number (46536672).

Almost surely, 2^1226540133 is an apocalyptic number.

1226540133 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1226540133 is a deficient number, since it is larger than the sum of its proper divisors (1007220123).

1226540133 is a wasteful number, since it uses less digits than its factorization.

1226540133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36594 (or 36591 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 1226540133 is about 35021.9949888638. The cubic root of 1226540133 is about 1070.4357072025.

Adding to 1226540133 its reverse (3310456221), we get a palindrome (4536996354).

The spelling of 1226540133 in words is "one billion, two hundred twenty-six million, five hundred forty thousand, one hundred thirty-three".