1423332145 has 4 divisors (see below), whose sum is σ = 1707998580. Its totient is φ = 1138665712.

The previous prime is 1423332139. The next prime is 1423332181. The reversal of 1423332145 is 5412333241.

It is a happy number.

1423332145 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5412333241 = 7 ⋅773190463.

It can be written as a sum of positive squares in 2 ways, for example, as 371756961 + 1051575184 = 19281^2 + 32428^2 .

It is a cyclic number.

It is not a de Polignac number, because 1423332145 - 2⁷ = 1423332017 is a prime.

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, 142333210 + ... + 142333219.

It is an arithmetic number, because the mean of its divisors is an integer number (426999645).

Almost surely, 2^1423332145 is an apocalyptic number.

It is an amenable number.

1423332145 is a deficient number, since it is larger than the sum of its proper divisors (284666435).

1423332145 is an equidigital number, since it uses as much as digits as its factorization.

1423332145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284666434.

The product of its digits is 8640, while the sum is 28.

The square root of 1423332145 is about 37727.0744293803. The cubic root of 1423332145 is about 1124.8693563519.

Adding to 1423332145 its reverse (5412333241), we get a palindrome (6835665386).

The spelling of 1423332145 in words is "one billion, four hundred twenty-three million, three hundred thirty-two thousand, one hundred forty-five".