1242203004 has 36 divisors (see below), whose sum is σ = 3588587184. Its totient is φ = 354915072.

The previous prime is 1242202999. The next prime is 1242203009. The reversal of 1242203004 is 4003022421.

It is an interprime number because it is at equal distance from previous prime (1242202999) and next prime (1242203009).

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242203009) 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 11 ways as a sum of consecutive naturals, for example, 2464437 + ... + 2464940.

Almost surely, 2^1242203004 is an apocalyptic number.

1242203004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1242203004 is an abundant number, since it is smaller than the sum of its proper divisors (2346384180).

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

1242203004 is a wasteful number, since it uses less digits than its factorization.

1242203004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4929394 (or 4929389 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1242203004 is about 35244.9003970787. The cubic root of 1242203004 is about 1074.9729227721.

Adding to 1242203004 its reverse (4003022421), we get a palindrome (5245225425).

The spelling of 1242203004 in words is "one billion, two hundred forty-two million, two hundred three thousand, four".