1242161468 has 12 divisors (see below), whose sum is σ = 2224335960. Its totient is φ = 606636912.

The previous prime is 1242161467. The next prime is 1242161497. The reversal of 1242161468 is 8641612421.

It is a super-2 number, since 2×1242161468² = 3085930225167830048, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242161467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3610763 + ... + 3611106.

It is an arithmetic number, because the mean of its divisors is an integer number (185361330).

Almost surely, 2^1242161468 is an apocalyptic number.

It is an amenable number.

1242161468 is a deficient number, since it is larger than the sum of its proper divisors (982174492).

1242161468 is a wasteful number, since it uses less digits than its factorization.

1242161468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7221916 (or 7221914 counting only the distinct ones).

The product of its digits is 18432, while the sum is 35.

The square root of 1242161468 is about 35244.3111437860. The cubic root of 1242161468 is about 1074.9609412165.

Adding to 1242161468 its reverse (8641612421), we get a palindrome (9883773889).

The spelling of 1242161468 in words is "one billion, two hundred forty-two million, one hundred sixty-one thousand, four hundred sixty-eight".