1200423340 has 12 divisors (see below), whose sum is σ = 2520889056. Its totient is φ = 480169328.

The previous prime is 1200423317. The next prime is 1200423373. The reversal of 1200423340 is 433240021.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 30010564 + ... + 30010603.

It is an arithmetic number, because the mean of its divisors is an integer number (210074088).

Almost surely, 2^1200423340 is an apocalyptic number.

1200423340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200423340 is an abundant number, since it is smaller than the sum of its proper divisors (1320465716).

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

1200423340 is a wasteful number, since it uses less digits than its factorization.

1200423340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60021176 (or 60021174 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 1200423340 is about 34647.1259991359. The cubic root of 1200423340 is about 1062.7835172346.

Adding to 1200423340 its reverse (433240021), we get a palindrome (1633663361).

It can be divided in two parts, 12004 and 23340, that added together give a square (35344 = 188²).

The spelling of 1200423340 in words is "one billion, two hundred million, four hundred twenty-three thousand, three hundred forty".