384397542 has 16 divisors (see below), whose sum is σ = 854216880. Its totient is φ = 128132496.

The previous prime is 384397471. The next prime is 384397543. The reversal of 384397542 is 245793483.

It is a super-2 number, since 2×384397542² = 295522940591283528, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (384397543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3559183 + ... + 3559290.

It is an arithmetic number, because the mean of its divisors is an integer number (53388555).

Almost surely, 2^384397542 is an apocalyptic number.

384397542 is an abundant number, since it is smaller than the sum of its proper divisors (469819338).

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

384397542 is a wasteful number, since it uses less digits than its factorization.

384397542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7118484 (or 7118478 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 384397542 is about 19606.0588084398. The cubic root of 384397542 is about 727.0989776232.

The spelling of 384397542 in words is "three hundred eighty-four million, three hundred ninety-seven thousand, five hundred forty-two".