212751242 has 16 divisors (see below), whose sum is σ = 363275712. Its totient is φ = 92500320.

The previous prime is 212751241. The next prime is 212751247. The reversal of 212751242 is 242157212.

212751242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (212751241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209723 + ... + 210734.

It is an arithmetic number, because the mean of its divisors is an integer number (22704732).

Almost surely, 2^212751242 is an apocalyptic number.

212751242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212751242 is a deficient number, since it is larger than the sum of its proper divisors (150524470).

212751242 is a wasteful number, since it uses less digits than its factorization.

212751242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420493.

The product of its digits is 2240, while the sum is 26.

The square root of 212751242 is about 14585.9947209644. The cubic root of 212751242 is about 596.9766822445.

The spelling of 212751242 in words is "two hundred twelve million, seven hundred fifty-one thousand, two hundred forty-two".