102045122 has 4 divisors (see below), whose sum is σ = 153067686. Its totient is φ = 51022560.

The previous prime is 102045121. The next prime is 102045127. The reversal of 102045122 is 221540201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 221540201 = 37 ⋅5987573.

It can be written as a sum of positive squares in only one way, i.e., 68740681 + 33304441 = 8291^2 + 5771^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 102045122.

It is not an unprimeable number, because it can be changed into a prime (102045121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25511279 + ... + 25511282.

Almost surely, 2^102045122 is an apocalyptic number.

102045122 is a deficient number, since it is larger than the sum of its proper divisors (51022564).

102045122 is an equidigital number, since it uses as much as digits as its factorization.

102045122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51022563.

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

The square root of 102045122 is about 10101.7385632375. The cubic root of 102045122 is about 467.3017596776.

Adding to 102045122 its reverse (221540201), we get a palindrome (323585323).

The spelling of 102045122 in words is "one hundred two million, forty-five thousand, one hundred twenty-two".