1242487700 has 18 divisors (see below), whose sum is σ = 2696198526. Its totient is φ = 496995040.

The previous prime is 1242487699. The next prime is 1242487703. The reversal of 1242487700 is 77842421.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 6543364 + 1235944336 = 2558^2 + 35156^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1242487703) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6212339 + ... + 6212538.

It is an arithmetic number, because the mean of its divisors is an integer number (149788807).

Almost surely, 2^1242487700 is an apocalyptic number.

1242487700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242487700 is an abundant number, since it is smaller than the sum of its proper divisors (1453710826).

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

1242487700 is a wasteful number, since it uses less digits than its factorization.

1242487700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12424891 (or 12424884 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 35.

The square root of 1242487700 is about 35248.9389911243. The cubic root of 1242487700 is about 1075.0550395472.

The spelling of 1242487700 in words is "one billion, two hundred forty-two million, four hundred eighty-seven thousand, seven hundred".