1423155200 has 84 divisors (see below), whose sum is σ = 3529717350. Its totient is φ = 569180160.

The previous prime is 1423155163. The next prime is 1423155229. The reversal of 1423155200 is 25513241.

It can be written as a sum of positive squares in 3 ways, for example, as 1279922176 + 143233024 = 35776^2 + 11968^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 201326 + ... + 208274.

Almost surely, 2^1423155200 is an apocalyptic number.

1423155200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1423155200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1764858675).

1423155200 is an abundant number, since it is smaller than the sum of its proper divisors (2106562150).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1423155200 is an frugal number, since it uses more digits than its factorization.

1423155200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6985 (or 6956 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1423155200 is about 37724.7292899498. The cubic root of 1423155200 is about 1124.8227407961.

Adding to 1423155200 its reverse (25513241), we get a palindrome (1448668441).

The spelling of 1423155200 in words is "one billion, four hundred twenty-three million, one hundred fifty-five thousand, two hundred".