242477919390 has 128 divisors (see below), whose sum is σ = 670125883392. Its totient is φ = 55004780160.

The previous prime is 242477919389. The next prime is 242477919401. The reversal of 242477919390 is 93919774242.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 242477919390.

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, 15492909 + ... + 15508551.

It is an arithmetic number, because the mean of its divisors is an integer number (5235358464).

Almost surely, 2^242477919390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 242477919390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335062941696).

242477919390 is an abundant number, since it is smaller than the sum of its proper divisors (427647964002).

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

242477919390 is a wasteful number, since it uses less digits than its factorization.

242477919390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16214.

The product of its (nonzero) digits is 6858432, while the sum is 57.

The spelling of 242477919390 in words is "two hundred forty-two billion, four hundred seventy-seven million, nine hundred nineteen thousand, three hundred ninety".