212465554242 has 16 divisors (see below), whose sum is σ = 427132826400. Its totient is φ = 70454898432.

The previous prime is 212465554219. The next prime is 212465554247. The reversal of 212465554242 is 242455564212.

It is a happy number.

It is a super-2 number, since 2×212465554242² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212465554194 and 212465554203.

It is not an unprimeable number, because it can be changed into a prime (212465554247) 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, 91736992 + ... + 91739307.

It is an arithmetic number, because the mean of its divisors is an integer number (26695801650).

Almost surely, 2^212465554242 is an apocalyptic number.

212465554242 is an abundant number, since it is smaller than the sum of its proper divisors (214667272158).

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

212465554242 is a wasteful number, since it uses less digits than its factorization.

212465554242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183476497.

The product of its digits is 768000, while the sum is 42.

The spelling of 212465554242 in words is "two hundred twelve billion, four hundred sixty-five million, five hundred fifty-four thousand, two hundred forty-two".