1242205234 has 16 divisors (see below), whose sum is σ = 1896128640. Its totient is φ = 610176240.

The previous prime is 1242205207. The next prime is 1242205267. The reversal of 1242205234 is 4325022421.

It is a junction number, because it is equal to n+sod(n) for n = 1242205199 and 1242205208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268279 + ... + 272869.

It is an arithmetic number, because the mean of its divisors is an integer number (118508040).

Almost surely, 2^1242205234 is an apocalyptic number.

1242205234 is a deficient number, since it is larger than the sum of its proper divisors (653923406).

1242205234 is a wasteful number, since it uses less digits than its factorization.

1242205234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6945.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 1242205234 is about 35244.9320328469. The cubic root of 1242205234 is about 1074.9735660347.

Adding to 1242205234 its reverse (4325022421), we get a palindrome (5567227655).

The spelling of 1242205234 in words is "one billion, two hundred forty-two million, two hundred five thousand, two hundred thirty-four".