242686620403 has 4 divisors (see below), whose sum is σ = 242696338560. Its totient is φ = 242676902248.

The previous prime is 242686620377. The next prime is 242686620409. The reversal of 242686620403 is 304026686242.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242686620403 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 242686620403.

It is not an unprimeable number, because it can be changed into a prime (242686620409) 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, 4821523 + ... + 4871596.

It is an arithmetic number, because the mean of its divisors is an integer number (60674084640).

Almost surely, 2^242686620403 is an apocalyptic number.

242686620403 is a deficient number, since it is larger than the sum of its proper divisors (9718157).

242686620403 is an equidigital number, since it uses as much as digits as its factorization.

242686620403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9718156.

The product of its (nonzero) digits is 663552, while the sum is 43.

The spelling of 242686620403 in words is "two hundred forty-two billion, six hundred eighty-six million, six hundred twenty thousand, four hundred three".