126263533 has 4 divisors (see below), whose sum is σ = 137742048. Its totient is φ = 114785020.

The previous prime is 126263521. The next prime is 126263653. The reversal of 126263533 is 335362621.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 126263533 - 2¹³ = 126255341 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 126263495 and 126263504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126263513) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5739241 + ... + 5739262.

It is an arithmetic number, because the mean of its divisors is an integer number (34435512).

Almost surely, 2^126263533 is an apocalyptic number.

It is an amenable number.

126263533 is a deficient number, since it is larger than the sum of its proper divisors (11478515).

126263533 is a wasteful number, since it uses less digits than its factorization.

126263533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11478514.

The product of its digits is 19440, while the sum is 31.

The square root of 126263533 is about 11236.7047215810. The cubic root of 126263533 is about 501.6790658309.

The spelling of 126263533 in words is "one hundred twenty-six million, two hundred sixty-three thousand, five hundred thirty-three".