210040434 has 24 divisors (see below), whose sum is σ = 455803920. Its totient is φ = 69903288.

The previous prime is 210040429. The next prime is 210040463. The reversal of 210040434 is 434040012.

210040434 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3009 + ... + 20715.

It is an arithmetic number, because the mean of its divisors is an integer number (18991830).

Almost surely, 2^210040434 is an apocalyptic number.

210040434 is an abundant number, since it is smaller than the sum of its proper divisors (245763486).

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

210040434 is a wasteful number, since it uses less digits than its factorization.

210040434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18374 (or 18371 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 210040434 is about 14492.7717845828. The cubic root of 210040434 is about 594.4303414853.

Adding to 210040434 its reverse (434040012), we get a palindrome (644080446).

The spelling of 210040434 in words is "two hundred ten million, forty thousand, four hundred thirty-four".