242054640618 has 64 divisors (see below), whose sum is σ = 570485680128. Its totient is φ = 67021128000.

The previous prime is 242054640617. The next prime is 242054640629. The reversal of 242054640618 is 816046450242.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 242054640618.

It is not an unprimeable number, because it can be changed into a prime (242054640617) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 79771 + ... + 700337.

It is an arithmetic number, because the mean of its divisors is an integer number (8913838752).

Almost surely, 2^242054640618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 242054640618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285242840064).

242054640618 is an abundant number, since it is smaller than the sum of its proper divisors (328431039510).

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

242054640618 is a wasteful number, since it uses less digits than its factorization.

242054640618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620867.

The product of its (nonzero) digits is 368640, while the sum is 42.

The spelling of 242054640618 in words is "two hundred forty-two billion, fifty-four million, six hundred forty thousand, six hundred eighteen".