1242548900 has 36 divisors (see below), whose sum is σ = 2716042308. Its totient is φ = 493386240.

The previous prime is 1242548873. The next prime is 1242548963. The reversal of 1242548900 is 98452421.

It can be written as a sum of positive squares in 6 ways, for example, as 37625956 + 1204922944 = 6134^2 + 34712^2 .

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, 31649 + ... + 59048.

Almost surely, 2^1242548900 is an apocalyptic number.

1242548900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1242548900 is an abundant number, since it is smaller than the sum of its proper divisors (1473493408).

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

1242548900 is a wasteful number, since it uses less digits than its factorization.

1242548900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90848 (or 90841 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 1242548900 is about 35249.8070916707. The cubic root of 1242548900 is about 1075.0726902352.

The spelling of 1242548900 in words is "one billion, two hundred forty-two million, five hundred forty-eight thousand, nine hundred".