1233423404242 has 4 divisors (see below), whose sum is σ = 1850135106366. Its totient is φ = 616711702120.

The previous prime is 1233423404209. The next prime is 1233423404267. The reversal of 1233423404242 is 2424043243321.

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., 1042769787921 + 190653616321 = 1021161^2 + 436639^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1233423404198 and 1233423404207.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308355851059 + ... + 308355851062.

Almost surely, 2^{1233423404242} is an apocalyptic number.

1233423404242 is a deficient number, since it is larger than the sum of its proper divisors (616711702124).

1233423404242 is an equidigital number, since it uses as much as digits as its factorization.

1233423404242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616711702123.

The product of its (nonzero) digits is 110592, while the sum is 34.

Adding to 1233423404242 its reverse (2424043243321), we get a palindrome (3657466647563).

The spelling of 1233423404242 in words is "one trillion, two hundred thirty-three billion, four hundred twenty-three million, four hundred four thousand, two hundred forty-two".