242018172 has 96 divisors (see below), whose sum is σ = 689955840. Its totient is φ = 72754560.

The previous prime is 242018149. The next prime is 242018191. The reversal of 242018172 is 271810242.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 162013 + ... + 163499.

It is an arithmetic number, because the mean of its divisors is an integer number (7187040).

Almost surely, 2^242018172 is an apocalyptic number.

242018172 is a gapful number since it is divisible by the number (22) 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 242018172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (344977920).

242018172 is an abundant number, since it is smaller than the sum of its proper divisors (447937668).

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

242018172 is a wasteful number, since it uses less digits than its factorization.

242018172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1648 (or 1640 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 242018172 is about 15556.9332453411. The cubic root of 242018172 is about 623.1835661297.

The spelling of 242018172 in words is "two hundred forty-two million, eighteen thousand, one hundred seventy-two".