388204742 has 4 divisors (see below), whose sum is σ = 582307116. Its totient is φ = 194102370.

The previous prime is 388204727. The next prime is 388204753. The reversal of 388204742 is 247402883.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×388204742² = 301405843422573128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 388204696 and 388204705.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 97051184 + ... + 97051187.

It is an arithmetic number, because the mean of its divisors is an integer number (145576779).

Almost surely, 2^388204742 is an apocalyptic number.

388204742 is a deficient number, since it is larger than the sum of its proper divisors (194102374).

388204742 is a wasteful number, since it uses less digits than its factorization.

388204742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194102373.

The product of its (nonzero) digits is 86016, while the sum is 38.

The square root of 388204742 is about 19702.9120182779. The cubic root of 388204742 is about 729.4915719137.

The spelling of 388204742 in words is "three hundred eighty-eight million, two hundred four thousand, seven hundred forty-two".