384787042 has 4 divisors (see below), whose sum is σ = 577180566. Its totient is φ = 192393520.

The previous prime is 384787021. The next prime is 384787043. The reversal of 384787042 is 240787483.

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

It can be written as a sum of positive squares in only one way, i.e., 378730521 + 6056521 = 19461^2 + 2461^2 .

It is a super-2 number, since 2×384787042² = 296122135382219528, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 384787042.

It is not an unprimeable number, because it can be changed into a prime (384787043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96196759 + ... + 96196762.

Almost surely, 2^384787042 is an apocalyptic number.

384787042 is a deficient number, since it is larger than the sum of its proper divisors (192393524).

384787042 is a wasteful number, since it uses less digits than its factorization.

384787042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192393523.

The product of its (nonzero) digits is 301056, while the sum is 43.

The square root of 384787042 is about 19615.9894473870. The cubic root of 384787042 is about 727.3444781966.

The spelling of 384787042 in words is "three hundred eighty-four million, seven hundred eighty-seven thousand, forty-two".