79102145 has 8 divisors (see below), whose sum is σ = 95051880. Its totient is φ = 63195520.

The previous prime is 79102141. The next prime is 79102151. The reversal of 79102145 is 54120197.

It can be written as a sum of positive squares in 4 ways, for example, as 2347024 + 76755121 = 1532^2 + 8761^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 79102145 - 2² = 79102141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79102141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6590 + ... + 14199.

It is an arithmetic number, because the mean of its divisors is an integer number (11881485).

Almost surely, 2^79102145 is an apocalyptic number.

It is an amenable number.

79102145 is a deficient number, since it is larger than the sum of its proper divisors (15949735).

79102145 is a wasteful number, since it uses less digits than its factorization.

79102145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21555.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 79102145 is about 8893.9386663053. The cubic root of 79102145 is about 429.2688946573.

The spelling of 79102145 in words is "seventy-nine million, one hundred two thousand, one hundred forty-five".