102202145 has 8 divisors (see below), whose sum is σ = 124653480. Its totient is φ = 80421120.

The previous prime is 102202129. The next prime is 102202183. The reversal of 102202145 is 541202201.

It can be written as a sum of positive squares in 4 ways, for example, as 2062096 + 100140049 = 1436^2 + 10007^2 .

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

It is not a de Polignac number, because 102202145 - 2⁴ = 102202129 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167240 + ... + 167849.

It is an arithmetic number, because the mean of its divisors is an integer number (15581685).

Almost surely, 2^102202145 is an apocalyptic number.

It is an amenable number.

102202145 is a deficient number, since it is larger than the sum of its proper divisors (22451335).

102202145 is an equidigital number, since it uses as much as digits as its factorization.

102202145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335155.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 102202145 is about 10109.5076536892. The cubic root of 102202145 is about 467.5413253335.

Adding to 102202145 its reverse (541202201), we get a palindrome (643404346).

The spelling of 102202145 in words is "one hundred two million, two hundred two thousand, one hundred forty-five".