242000040 has 128 divisors (see below), whose sum is σ = 752613120. Its totient is φ = 62208000.

The previous prime is 242000027. The next prime is 242000051. The reversal of 242000040 is 40000242.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

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, 496677 + ... + 497163.

It is an arithmetic number, because the mean of its divisors is an integer number (5879790).

Almost surely, 2^242000040 is an apocalyptic number.

242000040 is a gapful number since it is divisible by the number (20) 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 242000040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (376306560).

242000040 is an abundant number, since it is smaller than the sum of its proper divisors (510613080).

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

242000040 is a wasteful number, since it uses less digits than its factorization.

242000040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643 (or 639 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 242000040 is about 15556.3504717527. The cubic root of 242000040 is about 623.1680027713.

Adding to 242000040 its reverse (40000242), we get a palindrome (282000282).

The spelling of 242000040 in words is "two hundred forty-two million, forty", and thus it is an aban number.