78383042 has 12 divisors (see below), whose sum is σ = 119029110. Its totient is φ = 38712528.

The previous prime is 78383009. The next prime is 78383047. The reversal of 78383042 is 24038387.

It can be written as a sum of positive squares in only one way, i.e., 47458321 + 30924721 = 6889^2 + 5561^2 .

It is a super-2 number, since 2×78383042² = 12287802546347528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78382993 and 78383011.

It is not an unprimeable number, because it can be changed into a prime (78383047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10934 + ... + 16622.

Almost surely, 2^78383042 is an apocalyptic number.

78383042 is a deficient number, since it is larger than the sum of its proper divisors (40646068).

78383042 is an equidigital number, since it uses as much as digits as its factorization.

78383042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5857 (or 5774 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 78383042 is about 8853.4197912445. The cubic root of 78383042 is about 427.9641314163.

The spelling of 78383042 in words is "seventy-eight million, three hundred eighty-three thousand, forty-two".