1242450817250 has 64 divisors (see below), whose sum is σ = 2472785542656. Its totient is φ = 466403080000.

The previous prime is 1242450817243. The next prime is 1242450817271. The reversal of 1242450817250 is 527180542421.

It is a junction number, because it is equal to n+sod(n) for n = 1242450817198 and 1242450817207.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1733726 + ... + 2343225.

It is an arithmetic number, because the mean of its divisors is an integer number (38637274104).

Almost surely, 2^{1242450817250} is an apocalyptic number.

1242450817250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1242450817250 is a deficient number, since it is larger than the sum of its proper divisors (1230334725406).

1242450817250 is a wasteful number, since it uses less digits than its factorization.

1242450817250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4077044 (or 4077034 counting only the distinct ones).

The product of its (nonzero) digits is 179200, while the sum is 41.

The spelling of 1242450817250 in words is "one trillion, two hundred forty-two billion, four hundred fifty million, eight hundred seventeen thousand, two hundred fifty".