1126020431 has 4 divisors (see below), whose sum is σ = 1128828864. Its totient is φ = 1123212000.

The previous prime is 1126020421. The next prime is 1126020461. The reversal of 1126020431 is 1340206211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1340206211 = 19 ⋅70537169.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1126020431 is a prime.

It is a super-2 number, since 2×1126020431² = 2535844022058851522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1126020421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1403615 + ... + 1404416.

It is an arithmetic number, because the mean of its divisors is an integer number (282207216).

Almost surely, 2^1126020431 is an apocalyptic number.

1126020431 is a deficient number, since it is larger than the sum of its proper divisors (2808433).

1126020431 is an equidigital number, since it uses as much as digits as its factorization.

1126020431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2808432.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1126020431 is about 33556.2279018366. The cubic root of 1126020431 is about 1040.3562730928.

Adding to 1126020431 its reverse (1340206211), we get a palindrome (2466226642).

The spelling of 1126020431 in words is "one billion, one hundred twenty-six million, twenty thousand, four hundred thirty-one".