210542004 has 36 divisors (see below), whose sum is σ = 551917184. Its totient is φ = 70180344.

The previous prime is 210541979. The next prime is 210542027. The reversal of 210542004 is 400245012.

210542004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-4 number, since 4×210542004⁴ (a number of 34 digits) contains 4444 as substring.

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

It is a congruent number.

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, 107332 + ... + 109275.

Almost surely, 2^210542004 is an apocalyptic number.

It is an amenable number.

210542004 is an abundant number, since it is smaller than the sum of its proper divisors (341375180).

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

210542004 is a wasteful number, since it uses less digits than its factorization.

210542004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216626 (or 216612 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 210542004 is about 14510.0656097759. The cubic root of 210542004 is about 594.9031257203.

Adding to 210542004 its reverse (400245012), we get a palindrome (610787016).

The spelling of 210542004 in words is "two hundred ten million, five hundred forty-two thousand, four".