381042200 has 192 divisors, whose sum is σ = 1119571200. Its totient is φ = 117158400.

The previous prime is 381042139. The next prime is 381042209. The reversal of 381042200 is 2240183.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381042209) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1678487 + ... + 1678713.

It is an arithmetic number, because the mean of its divisors is an integer number (5831100).

Almost surely, 2^381042200 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 381042200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (559785600).

381042200 is an abundant number, since it is smaller than the sum of its proper divisors (738529000).

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

381042200 is a wasteful number, since it uses less digits than its factorization.

381042200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370 (or 361 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 381042200 is about 19520.3022517583. The cubic root of 381042200 is about 724.9772168821.

Adding to 381042200 its reverse (2240183), we get a palindrome (383282383).

It can be divided in two parts, 38104 and 2200, that added together give a palindrome (40304).

The spelling of 381042200 in words is "three hundred eighty-one million, forty-two thousand, two hundred".