1242203412 has 24 divisors (see below), whose sum is σ = 3024495936. Its totient is φ = 396064768.

The previous prime is 1242203399. The next prime is 1242203423. The reversal of 1242203412 is 2143022421.

It is a congruent number.

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, 2250093 + ... + 2250644.

It is an arithmetic number, because the mean of its divisors is an integer number (126020664).

Almost surely, 2^1242203412 is an apocalyptic number.

1242203412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1242203412 is an abundant number, since it is smaller than the sum of its proper divisors (1782292524).

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

1242203412 is a wasteful number, since it uses less digits than its factorization.

1242203412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4500767 (or 4500765 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1242203412 is about 35244.9061851496. The cubic root of 1242203412 is about 1074.9730404633.

Adding to 1242203412 its reverse (2143022421), we get a palindrome (3385225833).

The spelling of 1242203412 in words is "one billion, two hundred forty-two million, two hundred three thousand, four hundred twelve".