381730342 has 48 divisors (see below), whose sum is σ = 716389920. Its totient is φ = 148919040.

The previous prime is 381730331. The next prime is 381730343. The reversal of 381730342 is 243037183.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381730343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 227884 + ... + 229552.

It is an arithmetic number, because the mean of its divisors is an integer number (14924790).

Almost surely, 2^381730342 is an apocalyptic number.

381730342 is a deficient number, since it is larger than the sum of its proper divisors (334659578).

381730342 is a wasteful number, since it uses less digits than its factorization.

381730342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1757 (or 1726 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 381730342 is about 19537.9206160738. The cubic root of 381730342 is about 725.4133778914.

The spelling of 381730342 in words is "three hundred eighty-one million, seven hundred thirty thousand, three hundred forty-two".