79842101 has 2 divisors, whose sum is σ = 79842102. Its totient is φ = 79842100.

The previous prime is 79842089. The next prime is 79842109. The reversal of 79842101 is 10124897.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65772100 + 14070001 = 8110^2 + 3751^2 .

It is a cyclic number.

It is not a de Polignac number, because 79842101 - 2¹⁰ = 79841077 is a prime.

It is a super-2 number, since 2×79842101² = 12749522184188402, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79842109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39921050 + 39921051.

It is an arithmetic number, because the mean of its divisors is an integer number (39921051).

Almost surely, 2^79842101 is an apocalyptic number.

It is an amenable number.

79842101 is a deficient number, since it is larger than the sum of its proper divisors (1).

79842101 is an equidigital number, since it uses as much as digits as its factorization.

79842101 is an evil number, because the sum of its binary digits is even.

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

The square root of 79842101 is about 8935.4407277985. The cubic root of 79842101 is about 430.6032653901.

Adding to 79842101 its reverse (10124897), we get a palindrome (89966998).

The spelling of 79842101 in words is "seventy-nine million, eight hundred forty-two thousand, one hundred one".