242661240654 has 128 divisors (see below), whose sum is σ = 567091694592. Its totient is φ = 67794693120.

The previous prime is 242661240643. The next prime is 242661240677. The reversal of 242661240654 is 456042166242.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 313921012 + ... + 313921784.

It is an arithmetic number, because the mean of its divisors is an integer number (4430403864).

Almost surely, 2^242661240654 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 242661240654, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283545847296).

242661240654 is an abundant number, since it is smaller than the sum of its proper divisors (324430453938).

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

242661240654 is a wasteful number, since it uses less digits than its factorization.

242661240654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1530.

The product of its (nonzero) digits is 552960, while the sum is 42.

The spelling of 242661240654 in words is "two hundred forty-two billion, six hundred sixty-one million, two hundred forty thousand, six hundred fifty-four".