381742101 has 36 divisors (see below), whose sum is σ = 599508000. Its totient is φ = 233966304.

The previous prime is 381742073. The next prime is 381742121. The reversal of 381742101 is 101247183.

381742101 is a `hidden beast` number, since 381 + 74 + 210 + 1 = 666.

It is not a de Polignac number, because 381742101 - 2⁹ = 381741589 is a prime.

It is a super-3 number, since 3×381742101³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381742121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 637000 + ... + 637598.

It is an arithmetic number, because the mean of its divisors is an integer number (16653000).

Almost surely, 2^381742101 is an apocalyptic number.

It is an amenable number.

381742101 is a deficient number, since it is larger than the sum of its proper divisors (217765899).

381742101 is a wasteful number, since it uses less digits than its factorization.

381742101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050 (or 1034 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 381742101 is about 19538.2215413788. The cubic root of 381742101 is about 725.4208264726.

Adding to 381742101 its reverse (101247183), we get a palindrome (482989284).

The spelling of 381742101 in words is "three hundred eighty-one million, seven hundred forty-two thousand, one hundred one".