1423143506 has 16 divisors (see below), whose sum is σ = 2268014040. Its totient is φ = 668465280.

The previous prime is 1423143493. The next prime is 1423143517. The reversal of 1423143506 is 6053413241.

It can be written as a sum of positive squares in 4 ways, for example, as 1081817881 + 341325625 = 32891^2 + 18475^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

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, 329435 + ... + 333726.

Almost surely, 2^1423143506 is an apocalyptic number.

1423143506 is a deficient number, since it is larger than the sum of its proper divisors (844870534).

1423143506 is a wasteful number, since it uses less digits than its factorization.

1423143506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663229.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 1423143506 is about 37724.5742984596. The cubic root of 1423143506 is about 1124.8196599157.

Adding to 1423143506 its reverse (6053413241), we get a palindrome (7476556747).

The spelling of 1423143506 in words is "one billion, four hundred twenty-three million, one hundred forty-three thousand, five hundred six".