210040345 has 32 divisors (see below), whose sum is σ = 277908480. Its totient is φ = 151787520.

The previous prime is 210040319. The next prime is 210040349. The reversal of 210040345 is 543040012.

It is not a de Polignac number, because 210040345 - 2⁹ = 210039833 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (210040349) by changing a digit.

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, 214497 + ... + 215473.

It is an arithmetic number, because the mean of its divisors is an integer number (8684640).

Almost surely, 2^210040345 is an apocalyptic number.

It is an amenable number.

210040345 is a deficient number, since it is larger than the sum of its proper divisors (67868135).

210040345 is a wasteful number, since it uses less digits than its factorization.

210040345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 210040345 is about 14492.7687140863. The cubic root of 210040345 is about 594.4302575264.

Adding to 210040345 its reverse (543040012), we get a palindrome (753080357).

The spelling of 210040345 in words is "two hundred ten million, forty thousand, three hundred forty-five".