242170542 has 96 divisors (see below), whose sum is σ = 610571520. Its totient is φ = 68808960.

The previous prime is 242170507. The next prime is 242170547. The reversal of 242170542 is 245071242.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242170547) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 132817 + ... + 134627.

It is an arithmetic number, because the mean of its divisors is an integer number (6360120).

Almost surely, 2^242170542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 242170542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (305285760).

242170542 is an abundant number, since it is smaller than the sum of its proper divisors (368400978).

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

242170542 is a wasteful number, since it uses less digits than its factorization.

242170542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1878 (or 1875 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 242170542 is about 15561.8296482130. The cubic root of 242170542 is about 623.3143201676.

The spelling of 242170542 in words is "two hundred forty-two million, one hundred seventy thousand, five hundred forty-two".