102145546 has 8 divisors (see below), whose sum is σ = 153583524. Its totient is φ = 50951040.

The previous prime is 102145541. The next prime is 102145573. The reversal of 102145546 is 645541201.

It can be written as a sum of positive squares in 2 ways, for example, as 97239321 + 4906225 = 9861^2 + 2215^2 .

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

It is not an unprimeable number, because it can be changed into a prime (102145541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59815 + ... + 61498.

Almost surely, 2^102145546 is an apocalyptic number.

102145546 is a deficient number, since it is larger than the sum of its proper divisors (51437978).

102145546 is a wasteful number, since it uses less digits than its factorization.

102145546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121736.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 102145546 is about 10106.7079704521. The cubic root of 102145546 is about 467.4550021033.

Adding to 102145546 its reverse (645541201), we get a palindrome (747686747).

It can be divided in two parts, 10 and 2145546, that added together give a triangular number (2145556 = T₂₀₇₁).

The spelling of 102145546 in words is "one hundred two million, one hundred forty-five thousand, five hundred forty-six".