212541042 has 32 divisors (see below), whose sum is σ = 487094400. Its totient is φ = 60565248.

The previous prime is 212541041. The next prime is 212541059. The reversal of 212541042 is 240145212.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (212541041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9834 + ... + 22842.

It is an arithmetic number, because the mean of its divisors is an integer number (15221700).

Almost surely, 2^212541042 is an apocalyptic number.

212541042 is an abundant number, since it is smaller than the sum of its proper divisors (274553358).

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

212541042 is a wasteful number, since it uses less digits than its factorization.

212541042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13410.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 212541042 is about 14578.7873981343. The cubic root of 212541042 is about 596.7800114805.

Adding to 212541042 its reverse (240145212), we get a palindrome (452686254).

The spelling of 212541042 in words is "two hundred twelve million, five hundred forty-one thousand, forty-two".