1210422400 has 192 divisors, whose sum is σ = 3298851360. Its totient is φ = 435200000.

The previous prime is 1210422397. The next prime is 1210422419. The reversal of 1210422400 is 42240121.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4822275 + ... + 4822525.

Almost surely, 2^1210422400 is an apocalyptic number.

1210422400 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 1210422400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1649425680).

1210422400 is an abundant number, since it is smaller than the sum of its proper divisors (2088428960).

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

1210422400 is a wasteful number, since it uses less digits than its factorization.

1210422400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 423 (or 406 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 1210422400 is about 34791.1253051694. The cubic root of 1210422400 is about 1065.7262196918.

Adding to 1210422400 its reverse (42240121), we get a palindrome (1252662521).

The spelling of 1210422400 in words is "one billion, two hundred ten million, four hundred twenty-two thousand, four hundred".