78290141 has 2 divisors, whose sum is σ = 78290142. Its totient is φ = 78290140.

The previous prime is 78290099. The next prime is 78290153. The reversal of 78290141 is 14109287.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77616100 + 674041 = 8810^2 + 821^2 .

It is a cyclic number.

It is not a de Polignac number, because 78290141 - 2⁶ = 78290077 is a prime.

It is a super-2 number, since 2×78290141² = 12258692355599762, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 78290098 and 78290107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78290161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39145070 + 39145071.

It is an arithmetic number, because the mean of its divisors is an integer number (39145071).

Almost surely, 2^78290141 is an apocalyptic number.

It is an amenable number.

78290141 is a deficient number, since it is larger than the sum of its proper divisors (1).

78290141 is an equidigital number, since it uses as much as digits as its factorization.

78290141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 78290141 is about 8848.1716190409. The cubic root of 78290141 is about 427.7949876299.

The spelling of 78290141 in words is "seventy-eight million, two hundred ninety thousand, one hundred forty-one".