102040045 has 8 divisors (see below), whose sum is σ = 122716440. Its totient is φ = 81453120.

The previous prime is 102040027. The next prime is 102040061. The reversal of 102040045 is 540040201.

It can be written as a sum of positive squares in 4 ways, for example, as 28869129 + 73170916 = 5373^2 + 8554^2 .

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

It is not a de Polignac number, because 102040045 - 2⁹ = 102039533 is a prime.

It is a congruent number.

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, 19830 + ... + 24439.

It is an arithmetic number, because the mean of its divisors is an integer number (15339555).

Almost surely, 2^102040045 is an apocalyptic number.

It is an amenable number.

102040045 is a deficient number, since it is larger than the sum of its proper divisors (20676395).

102040045 is an equidigital number, since it uses as much as digits as its factorization.

102040045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44735.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 102040045 is about 10101.4872667345. The cubic root of 102040045 is about 467.2940097387.

Adding to 102040045 its reverse (540040201), we get a palindrome (642080246).

The spelling of 102040045 in words is "one hundred two million, forty thousand, forty-five".