1242243993600 has 1053 divisors, whose sum is σ = 4730297609973. Its totient is φ = 323561226240.

The previous prime is 1242243993589. The next prime is 1242243993611. The reversal of 1242243993600 is 63993422421.

The square root of 1242243993600 is 1114560.

It is a perfect power (a square), and thus also a powerful number.

1242243993600 is a `hidden beast` number, since 1 + 2 + 4 + 2 + 2 + 4 + 39 + 9 + 3 + 600 = 666.

It is an interprime number because it is at equal distance from previous prime (1242243993589) and next prime (1242243993611).

It can be written as a sum of positive squares in only one way, i.e., 447207837696 + 795036155904 = 668736^2 + 891648^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 28889395179 + ... + 28889395221.

Almost surely, 2^{1242243993600} is an apocalyptic number.

1242243993600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1242243993600 is the 1114560-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1242243993600

1242243993600 is an abundant number, since it is smaller than the sum of its proper divisors (3488053616373).

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

1242243993600 is an frugal number, since it uses more digits than its factorization.

1242243993600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The spelling of 1242243993600 in words is "one trillion, two hundred forty-two billion, two hundred forty-three million, nine hundred ninety-three thousand, six hundred".