78461041 has 4 divisors (see below), whose sum is σ = 79941492. Its totient is φ = 76980592.

The previous prime is 78461039. The next prime is 78461077. The reversal of 78461041 is 14016487.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14016487 = 3169 ⋅4423.

It can be written as a sum of positive squares in 2 ways, for example, as 48441600 + 30019441 = 6960^2 + 5479^2 .

It is not a de Polignac number, because 78461041 - 2¹ = 78461039 is a prime.

It is a super-2 number, since 2×78461041² = 12312269909607362, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78460994 and 78461012.

It is not an unprimeable number, because it can be changed into a prime (78461011) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 740146 + ... + 740251.

It is an arithmetic number, because the mean of its divisors is an integer number (19985373).

Almost surely, 2^78461041 is an apocalyptic number.

It is an amenable number.

78461041 is a deficient number, since it is larger than the sum of its proper divisors (1480451).

78461041 is a wasteful number, since it uses less digits than its factorization.

78461041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1480450.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 78461041 is about 8857.8237169183. The cubic root of 78461041 is about 428.1060401215.

The spelling of 78461041 in words is "seventy-eight million, four hundred sixty-one thousand, forty-one".