210472140 has 96 divisors (see below), whose sum is σ = 618367680. Its totient is φ = 53415936.

The previous prime is 210472127. The next prime is 210472153. The reversal of 210472140 is 41274012.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (210472127) and next prime (210472153).

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 31 ways as a sum of consecutive naturals, for example, 126192 + ... + 127848.

It is an arithmetic number, because the mean of its divisors is an integer number (6441330).

Almost surely, 2^210472140 is an apocalyptic number.

210472140 is a gapful number since it is divisible by the number (20) 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 210472140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309183840).

210472140 is an abundant number, since it is smaller than the sum of its proper divisors (407895540).

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

210472140 is a wasteful number, since it uses less digits than its factorization.

210472140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1771 (or 1769 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 210472140 is about 14507.6579777716. The cubic root of 210472140 is about 594.8373163501.

The spelling of 210472140 in words is "two hundred ten million, four hundred seventy-two thousand, one hundred forty".