424420400242 has 4 divisors (see below), whose sum is σ = 636630600366. Its totient is φ = 212210200120.

The previous prime is 424420400233. The next prime is 424420400291. The reversal of 424420400242 is 242004024424.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 273339706761 + 151080693481 = 522819^2 + 388691^2 .

It is a super-2 number, since 2×424420400242² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 424420400242.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106105100059 + ... + 106105100062.

Almost surely, 2^424420400242 is an apocalyptic number.

424420400242 is a deficient number, since it is larger than the sum of its proper divisors (212210200124).

424420400242 is a wasteful number, since it uses less digits than its factorization.

424420400242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212210200123.

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 424420400242 its reverse (242004024424), we get a palindrome (666424424666).

The spelling of 424420400242 in words is "four hundred twenty-four billion, four hundred twenty million, four hundred thousand, two hundred forty-two".