212144240042 has 128 divisors (see below), whose sum is σ = 399741419520. Its totient is φ = 82396440000.

The previous prime is 212144239987. The next prime is 212144240051. The reversal of 212144240042 is 240042441212.

It is a happy number.

It is a super-3 number, since 3×212144240042³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212144239993 and 212144240020.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 432065417 + ... + 432065907.

It is an arithmetic number, because the mean of its divisors is an integer number (3122979840).

Almost surely, 2^212144240042 is an apocalyptic number.

212144240042 is a deficient number, since it is larger than the sum of its proper divisors (187597179478).

212144240042 is a wasteful number, since it uses less digits than its factorization.

212144240042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048.

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 212144240042 its reverse (240042441212), we get a palindrome (452186681254).

The spelling of 212144240042 in words is "two hundred twelve billion, one hundred forty-four million, two hundred forty thousand, forty-two".