242442131544 has 96 divisors (see below), whose sum is σ = 663574158000. Its totient is φ = 79958534400.

The previous prime is 242442131513. The next prime is 242442131567. The reversal of 242442131544 is 445131244242.

242442131544 is a `hidden beast` number, since 2 + 42 + 4 + 42 + 1 + 31 + 544 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 242442131499 and 242442131508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11253567 + ... + 11275089.

Almost surely, 2^242442131544 is an apocalyptic number.

242442131544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 242442131544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331787079000).

242442131544 is an abundant number, since it is smaller than the sum of its proper divisors (421132026456).

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

242442131544 is a wasteful number, since it uses less digits than its factorization.

242442131544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23185 (or 23178 counting only the distinct ones).

The product of its digits is 122880, while the sum is 36.

Adding to 242442131544 its reverse (445131244242), we get a palindrome (687573375786).

The spelling of 242442131544 in words is "two hundred forty-two billion, four hundred forty-two million, one hundred thirty-one thousand, five hundred forty-four".