1210210040 has 64 divisors (see below), whose sum is σ = 2945527200. Its totient is φ = 444851712.

The previous prime is 1210210019. The next prime is 1210210081. The reversal of 1210210040 is 400120121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113999 + ... + 124161.

Almost surely, 2^1210210040 is an apocalyptic number.

1210210040 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 1210210040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1472763600).

1210210040 is an abundant number, since it is smaller than the sum of its proper divisors (1735317160).

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

1210210040 is a wasteful number, since it uses less digits than its factorization.

1210210040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10416 (or 10412 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1210210040 is about 34788.0732435701. The cubic root of 1210210040 is about 1065.6638913518.

Adding to 1210210040 its reverse (400120121), we get a palindrome (1610330161).

The spelling of 1210210040 in words is "one billion, two hundred ten million, two hundred ten thousand, forty".