126205453 has 4 divisors (see below), whose sum is σ = 137678688. Its totient is φ = 114732220.

The previous prime is 126205397. The next prime is 126205463. The reversal of 126205453 is 354502621.

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 126205453 - 2¹⁷ = 126074381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126205463) 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, 5736601 + ... + 5736622.

It is an arithmetic number, because the mean of its divisors is an integer number (34419672).

Almost surely, 2^126205453 is an apocalyptic number.

It is an amenable number.

126205453 is a deficient number, since it is larger than the sum of its proper divisors (11473235).

126205453 is a wasteful number, since it uses less digits than its factorization.

126205453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11473234.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 126205453 is about 11234.1200367452. The cubic root of 126205453 is about 501.6021315326.

The spelling of 126205453 in words is "one hundred twenty-six million, two hundred five thousand, four hundred fifty-three".