42240210 has 16 divisors (see below), whose sum is σ = 101376576. Its totient is φ = 11264048.

The previous prime is 42240181. The next prime is 42240221. The reversal of 42240210 is 1204224.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42240210.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 703974 + ... + 704033.

It is an arithmetic number, because the mean of its divisors is an integer number (6336036).

Almost surely, 2^42240210 is an apocalyptic number.

42240210 is an abundant number, since it is smaller than the sum of its proper divisors (59136366).

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

42240210 is a wasteful number, since it uses less digits than its factorization.

42240210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1408017.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 42240210 is about 6499.2468794469. The cubic root of 42240210 is about 348.2640847872.

Adding to 42240210 its reverse (1204224), we get a palindrome (43444434).

The spelling of 42240210 in words is "forty-two million, two hundred forty thousand, two hundred ten".