1126434521 has 4 divisors (see below), whose sum is σ = 1127131044. Its totient is φ = 1125738000.

The previous prime is 1126434509. The next prime is 1126434563. The reversal of 1126434521 is 1254346211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 640849225 + 485585296 = 25315^2 + 22036^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1126434521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1126434581) 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, 345830 + ... + 349071.

It is an arithmetic number, because the mean of its divisors is an integer number (281782761).

Almost surely, 2^1126434521 is an apocalyptic number.

It is an amenable number.

1126434521 is a deficient number, since it is larger than the sum of its proper divisors (696523).

1126434521 is an equidigital number, since it uses as much as digits as its factorization.

1126434521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696522.

The product of its digits is 5760, while the sum is 29.

The square root of 1126434521 is about 33562.3974262865. The cubic root of 1126434521 is about 1040.4837865670.

The spelling of 1126434521 in words is "one billion, one hundred twenty-six million, four hundred thirty-four thousand, five hundred twenty-one".