1242233444 has 24 divisors (see below), whose sum is σ = 2275983360. Its totient is φ = 592469024.

The previous prime is 1242233429. The next prime is 1242233459. The reversal of 1242233444 is 4443322421.

It is an interprime number because it is at equal distance from previous prime (1242233429) and next prime (1242233459).

It is a super-2 number, since 2×1242233444² = 3086287858784202272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

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, 54884 + ... + 74139.

It is an arithmetic number, because the mean of its divisors is an integer number (94832640).

Almost surely, 2^1242233444 is an apocalyptic number.

It is an amenable number.

1242233444 is a deficient number, since it is larger than the sum of its proper divisors (1033749916).

1242233444 is a wasteful number, since it uses less digits than its factorization.

1242233444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129139 (or 129137 counting only the distinct ones).

The product of its digits is 18432, while the sum is 29.

The square root of 1242233444 is about 35245.3322299564. The cubic root of 1242233444 is about 1074.9817033843.

Adding to 1242233444 its reverse (4443322421), we get a palindrome (5685555865).

The spelling of 1242233444 in words is "one billion, two hundred forty-two million, two hundred thirty-three thousand, four hundred forty-four".