78041045 has 4 divisors (see below), whose sum is σ = 93649260. Its totient is φ = 62432832.

The previous prime is 78041039. The next prime is 78041071. The reversal of 78041045 is 54014087.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8168164 + 69872881 = 2858^2 + 8359^2 .

It is a cyclic number.

It is not a de Polignac number, because 78041045 - 2²⁰ = 76992469 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78040999 and 78041017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7804100 + ... + 7804109.

It is an arithmetic number, because the mean of its divisors is an integer number (23412315).

Almost surely, 2^78041045 is an apocalyptic number.

It is an amenable number.

78041045 is a deficient number, since it is larger than the sum of its proper divisors (15608215).

78041045 is a wasteful number, since it uses less digits than its factorization.

78041045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15608214.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 78041045 is about 8834.0842762564. The cubic root of 78041045 is about 427.3408000174.

The spelling of 78041045 in words is "seventy-eight million, forty-one thousand, forty-five".