1243850057 has 8 divisors (see below), whose sum is σ = 1274408640. Its totient is φ = 1213554160.

The previous prime is 1243850021. The next prime is 1243850059. The reversal of 1243850057 is 7500583421.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1243850057 - 2¹² = 1243845961 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1243849999 and 1243850026.

It is not an unprimeable number, because it can be changed into a prime (1243850059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56069 + ... + 75042.

It is an arithmetic number, because the mean of its divisors is an integer number (159301080).

Almost surely, 2^1243850057 is an apocalyptic number.

It is an amenable number.

1243850057 is a deficient number, since it is larger than the sum of its proper divisors (30558583).

1243850057 is a wasteful number, since it uses less digits than its factorization.

1243850057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131343.

The product of its (nonzero) digits is 33600, while the sum is 35.

The square root of 1243850057 is about 35268.2584911702. The cubic root of 1243850057 is about 1075.4478197687.

The spelling of 1243850057 in words is "one billion, two hundred forty-three million, eight hundred fifty thousand, fifty-seven".