1210230420 has 144 divisors (see below), whose sum is σ = 4009279680. Its totient is φ = 271896576.

The previous prime is 1210230409. The next prime is 1210230443. The reversal of 1210230420 is 240320121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1210230420.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 169972 + ... + 176948.

It is an arithmetic number, because the mean of its divisors is an integer number (27842220).

Almost surely, 2^1210230420 is an apocalyptic number.

1210230420 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 1210230420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2004639840).

1210230420 is an abundant number, since it is smaller than the sum of its proper divisors (2799049260).

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

1210230420 is a wasteful number, since it uses less digits than its factorization.

1210230420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7062 (or 7053 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1210230420 is about 34788.3661588181. The cubic root of 1210230420 is about 1065.6698732634.

Adding to 1210230420 its reverse (240320121), we get a palindrome (1450550541).

The spelling of 1210230420 in words is "one billion, two hundred ten million, two hundred thirty thousand, four hundred twenty".