1426123645 has 8 divisors (see below), whose sum is σ = 1713011256. Its totient is φ = 1139790336.

The previous prime is 1426123639. The next prime is 1426123663. The reversal of 1426123645 is 5463216241.

It can be written as a sum of positive squares in 4 ways, for example, as 620358649 + 805764996 = 24907^2 + 28386^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1426123645 - 2¹⁷ = 1425992573 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1426123645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132892 + ... + 143221.

It is an arithmetic number, because the mean of its divisors is an integer number (214126407).

Almost surely, 2^1426123645 is an apocalyptic number.

It is an amenable number.

1426123645 is a deficient number, since it is larger than the sum of its proper divisors (286887611).

1426123645 is a wasteful number, since it uses less digits than its factorization.

1426123645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277151.

The product of its digits is 34560, while the sum is 34.

The square root of 1426123645 is about 37764.0522852090. The cubic root of 1426123645 is about 1125.6042567844.

Adding to 1426123645 its reverse (5463216241), we get a palindrome (6889339886).

The spelling of 1426123645 in words is "one billion, four hundred twenty-six million, one hundred twenty-three thousand, six hundred forty-five".