78001141 has 2 divisors, whose sum is σ = 78001142. Its totient is φ = 78001140.

The previous prime is 78001139. The next prime is 78001207. The reversal of 78001141 is 14110087.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62869041 + 15132100 = 7929^2 + 3890^2 .

It is a cyclic number.

It is not a de Polignac number, because 78001141 - 2¹ = 78001139 is a prime.

Together with 78001139, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78001541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39000570 + 39000571.

It is an arithmetic number, because the mean of its divisors is an integer number (39000571).

Almost surely, 2^78001141 is an apocalyptic number.

It is an amenable number.

78001141 is a deficient number, since it is larger than the sum of its proper divisors (1).

78001141 is an equidigital number, since it uses as much as digits as its factorization.

78001141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 22.

The square root of 78001141 is about 8831.8254624964. The cubic root of 78001141 is about 427.2679515372.

The spelling of 78001141 in words is "seventy-eight million, one thousand, one hundred forty-one".