381007242 has 144 divisors (see below), whose sum is σ = 1058290272. Its totient is φ = 97957440.

The previous prime is 381007189. The next prime is 381007243. The reversal of 381007242 is 242700183.

It is not an unprimeable number, because it can be changed into a prime (381007243) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1678333 + ... + 1678559.

It is an arithmetic number, because the mean of its divisors is an integer number (7349238).

Almost surely, 2^381007242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 381007242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (529145136).

381007242 is an abundant number, since it is smaller than the sum of its proper divisors (677283030).

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

381007242 is a wasteful number, since it uses less digits than its factorization.

381007242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433 (or 423 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 381007242 is about 19519.4068045112. The cubic root of 381007242 is about 724.9550456470.

The spelling of 381007242 in words is "three hundred eighty-one million, seven thousand, two hundred forty-two".