1426235623 has 4 divisors (see below), whose sum is σ = 1436646240. Its totient is φ = 1415825008.

The previous prime is 1426235597. The next prime is 1426235659. The reversal of 1426235623 is 3265326241.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1426235623 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 (1426235123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5205103 + ... + 5205376.

It is an arithmetic number, because the mean of its divisors is an integer number (359161560).

Almost surely, 2^1426235623 is an apocalyptic number.

1426235623 is a deficient number, since it is larger than the sum of its proper divisors (10410617).

1426235623 is a wasteful number, since it uses less digits than its factorization.

1426235623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10410616.

The product of its digits is 51840, while the sum is 34.

The square root of 1426235623 is about 37765.5348565329. The cubic root of 1426235623 is about 1125.6337165055.

The spelling of 1426235623 in words is "one billion, four hundred twenty-six million, two hundred thirty-five thousand, six hundred twenty-three".