212735042 has 16 divisors (see below), whose sum is σ = 363864312. Its totient is φ = 92409600.

The previous prime is 212735041. The next prime is 212735063. The reversal of 212735042 is 240537212.

It can be written as a sum of positive squares in 4 ways, for example, as 149548441 + 63186601 = 12229^2 + 7949^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (212735041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240209 + ... + 241092.

Almost surely, 2^212735042 is an apocalyptic number.

212735042 is a deficient number, since it is larger than the sum of its proper divisors (151129270).

212735042 is a wasteful number, since it uses less digits than its factorization.

212735042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481333.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 212735042 is about 14585.4393831657. The cubic root of 212735042 is about 596.9615295437.

The spelling of 212735042 in words is "two hundred twelve million, seven hundred thirty-five thousand, forty-two".