1210420112 has 60 divisors (see below), whose sum is σ = 2584378860. Its totient is φ = 548782080.

The previous prime is 1210420091. The next prime is 1210420117. The reversal of 1210420112 is 2110240121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 161696656 + 1048723456 = 12716^2 + 32384^2 .

It is not an unprimeable number, because it can be changed into a prime (1210420117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1302464 + ... + 1303392.

It is an arithmetic number, because the mean of its divisors is an integer number (43072981).

Almost surely, 2^1210420112 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 1210420112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1292189430).

1210420112 is an abundant number, since it is smaller than the sum of its proper divisors (1373958748).

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

1210420112 is a wasteful number, since it uses less digits than its factorization.

1210420112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1632 (or 1615 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1210420112 is about 34791.0924232051. The cubic root of 1210420112 is about 1065.7255481953.

Adding to 1210420112 its reverse (2110240121), we get a palindrome (3320660233).

Subtracting 1210420112 from its reverse (2110240121), we obtain a square (899820009 = 29997²).

The spelling of 1210420112 in words is "one billion, two hundred ten million, four hundred twenty thousand, one hundred twelve".