1242233100 has 54 divisors (see below), whose sum is σ = 3893713460. Its totient is φ = 331261920.

The previous prime is 1242233099. The next prime is 1242233159. The reversal of 1242233100 is 13322421.

It is a super-2 number, since 2×1242233100² = 3086286149471220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 689230 + ... + 691029.

Almost surely, 2^1242233100 is an apocalyptic number.

1242233100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242233100 is an abundant number, since it is smaller than the sum of its proper divisors (2651480360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1242233100 is a wasteful number, since it uses less digits than its factorization.

1242233100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1380279 (or 1380269 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1242233100 is about 35245.3273498772. The cubic root of 1242233100 is about 1074.9816041561.

Adding to 1242233100 its reverse (13322421), we get a palindrome (1255555521).

The spelling of 1242233100 in words is "one billion, two hundred forty-two million, two hundred thirty-three thousand, one hundred".