78042275 has 6 divisors (see below), whose sum is σ = 96772452. Its totient is φ = 62433800.

The previous prime is 78042259. The next prime is 78042301. The reversal of 78042275 is 57224087.

It is not a de Polignac number, because 78042275 - 2⁴ = 78042259 is a prime.

It is a Duffinian 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 in 5 ways as a sum of consecutive naturals, for example, 1560821 + ... + 1560870.

It is an arithmetic number, because the mean of its divisors is an integer number (16128742).

Almost surely, 2^78042275 is an apocalyptic number.

78042275 is a deficient number, since it is larger than the sum of its proper divisors (18730177).

78042275 is a wasteful number, since it uses less digits than its factorization.

78042275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3121701 (or 3121696 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 35.

The square root of 78042275 is about 8834.1538927053. The cubic root of 78042275 is about 427.3430451028.

The spelling of 78042275 in words is "seventy-eight million, forty-two thousand, two hundred seventy-five".