1242418900 has 36 divisors (see below), whose sum is σ = 2761815420. Its totient is φ = 484844800.

The previous prime is 1242418883. The next prime is 1242418913. The reversal of 1242418900 is 98142421.

It can be written as a sum of positive squares in 6 ways, for example, as 6615184 + 1235803716 = 2572^2 + 35154^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 147415 + ... + 155614.

It is an arithmetic number, because the mean of its divisors is an integer number (76717095).

Almost surely, 2^1242418900 is an apocalyptic number.

1242418900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242418900 is an abundant number, since it is smaller than the sum of its proper divisors (1519396520).

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

1242418900 is a wasteful number, since it uses less digits than its factorization.

1242418900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303084 (or 303077 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 1242418900 is about 35247.9630617146. The cubic root of 1242418900 is about 1075.0351962516.

The spelling of 1242418900 in words is "one billion, two hundred forty-two million, four hundred eighteen thousand, nine hundred".