212404364242 has 16 divisors (see below), whose sum is σ = 370991990592. Its totient is φ = 89312886000.

The previous prime is 212404364231. The next prime is 212404364321. The reversal of 212404364242 is 242463404212.

It is a super-2 number, since 2×212404364242² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212404364198 and 212404364207.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143128884 + ... + 143130367.

It is an arithmetic number, because the mean of its divisors is an integer number (23186999412).

Almost surely, 2^212404364242 is an apocalyptic number.

212404364242 is a deficient number, since it is larger than the sum of its proper divisors (158587626350).

212404364242 is a wasteful number, since it uses less digits than its factorization.

212404364242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286259313.

The product of its (nonzero) digits is 73728, while the sum is 34.

Adding to 212404364242 its reverse (242463404212), we get a palindrome (454867768454).

The spelling of 212404364242 in words is "two hundred twelve billion, four hundred four million, three hundred sixty-four thousand, two hundred forty-two".