78042301 has 2 divisors, whose sum is σ = 78042302. Its totient is φ = 78042300.

The previous prime is 78042259. The next prime is 78042317. The reversal of 78042301 is 10324087.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54022500 + 24019801 = 7350^2 + 4901^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78042301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78042331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39021150 + 39021151.

It is an arithmetic number, because the mean of its divisors is an integer number (39021151).

Almost surely, 2^78042301 is an apocalyptic number.

It is an amenable number.

78042301 is a deficient number, since it is larger than the sum of its proper divisors (1).

78042301 is an equidigital number, since it uses as much as digits as its factorization.

78042301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 78042301 is about 8834.1553642666. The cubic root of 78042301 is about 427.3430925596.

Adding to 78042301 its reverse (10324087), we get a palindrome (88366388).

The spelling of 78042301 in words is "seventy-eight million, forty-two thousand, three hundred one".