1200213400 has 96 divisors (see below), whose sum is σ = 2915550000. Its totient is φ = 459025920.

The previous prime is 1200213397. The next prime is 1200213403. The reversal of 1200213400 is 43120021.

It is an interprime number because it is at equal distance from previous prime (1200213397) and next prime (1200213403).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200213403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 435226 + ... + 437974.

Almost surely, 2^1200213400 is an apocalyptic number.

1200213400 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 1200213400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1457775000).

1200213400 is an abundant number, since it is smaller than the sum of its proper divisors (1715336600).

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

1200213400 is a wasteful number, since it uses less digits than its factorization.

1200213400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2861 (or 2852 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1200213400 is about 34644.0961781369. The cubic root of 1200213400 is about 1062.7215574875.

Adding to 1200213400 its reverse (43120021), we get a palindrome (1243333421).

The spelling of 1200213400 in words is "one billion, two hundred million, two hundred thirteen thousand, four hundred".