1243243835902 has 8 divisors (see below), whose sum is σ = 1891131468912. Its totient is φ = 612866679600.

The previous prime is 1243243835851. The next prime is 1243243835903. The reversal of 1243243835902 is 2095383423421.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243243835903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4377618999 + ... + 4377619282.

It is an arithmetic number, because the mean of its divisors is an integer number (236391433614).

Almost surely, 2^{1243243835902} is an apocalyptic number.

1243243835902 is a deficient number, since it is larger than the sum of its proper divisors (647887633010).

1243243835902 is an equidigital number, since it uses as much as digits as its factorization.

1243243835902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8755238354.

The product of its (nonzero) digits is 1244160, while the sum is 46.

The spelling of 1243243835902 in words is "one trillion, two hundred forty-three billion, two hundred forty-three million, eight hundred thirty-five thousand, nine hundred two".