1423432555 has 4 divisors (see below), whose sum is σ = 1708119072. Its totient is φ = 1138746040.

The previous prime is 1423432537. The next prime is 1423432573. The reversal of 1423432555 is 5552343241.

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

It is an interprime number because it is at equal distance from previous prime (1423432537) and next prime (1423432573).

It is not a de Polignac number, because 1423432555 - 2⁷ = 1423432427 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 1423432555.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142343251 + ... + 142343260.

It is an arithmetic number, because the mean of its divisors is an integer number (427029768).

Almost surely, 2^1423432555 is an apocalyptic number.

1423432555 is a deficient number, since it is larger than the sum of its proper divisors (284686517).

1423432555 is an equidigital number, since it uses as much as digits as its factorization.

1423432555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284686516.

The product of its digits is 72000, while the sum is 34.

The square root of 1423432555 is about 37728.4051478458. The cubic root of 1423432555 is about 1124.8958073051.

Adding to 1423432555 its reverse (5552343241), we get a palindrome (6975775796).

The spelling of 1423432555 in words is "one billion, four hundred twenty-three million, four hundred thirty-two thousand, five hundred fifty-five".