1123420426 has 8 divisors (see below), whose sum is σ = 1687509540. Its totient is φ = 560917248.

The previous prime is 1123420399. The next prime is 1123420427. The reversal of 1123420426 is 6240243211.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1102306401 + 21114025 = 33201^2 + 4595^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1123420426.

It is not an unprimeable number, because it can be changed into a prime (1123420427) 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, 394711 + ... + 397546.

Almost surely, 2^1123420426 is an apocalyptic number.

1123420426 is a deficient number, since it is larger than the sum of its proper divisors (564089114).

1123420426 is an equidigital number, since it uses as much as digits as its factorization.

1123420426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792968.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 1123420426 is about 33517.4644924105. The cubic root of 1123420426 is about 1039.5549211141.

Adding to 1123420426 its reverse (6240243211), we get a palindrome (7363663637).

The spelling of 1123420426 in words is "one billion, one hundred twenty-three million, four hundred twenty thousand, four hundred twenty-six".