1423205457 has 16 divisors (see below), whose sum is σ = 1942828032. Its totient is φ = 926421120.

The previous prime is 1423205453. The next prime is 1423205467. The reversal of 1423205457 is 7545023241.

It is not a de Polignac number, because 1423205457 - 2² = 1423205453 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1423205453) 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 15 ways as a sum of consecutive naturals, for example, 3313 + ... + 53454.

It is an arithmetic number, because the mean of its divisors is an integer number (121426752).

Almost surely, 2^1423205457 is an apocalyptic number.

It is an amenable number.

1423205457 is a deficient number, since it is larger than the sum of its proper divisors (519622575).

1423205457 is a wasteful number, since it uses less digits than its factorization.

1423205457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56968.

The product of its (nonzero) digits is 33600, while the sum is 33.

The square root of 1423205457 is about 37725.3953856020. The cubic root of 1423205457 is about 1124.8359812239.

Adding to 1423205457 its reverse (7545023241), we get a palindrome (8968228698).

The spelling of 1423205457 in words is "one billion, four hundred twenty-three million, two hundred five thousand, four hundred fifty-seven".