145102473 has 6 divisors (see below), whose sum is σ = 209592474. Its totient is φ = 96734976.

The previous prime is 145102471. The next prime is 145102501. The reversal of 145102473 is 374201541.

It can be written as a sum of positive squares in only one way, i.e., 89927289 + 55175184 = 9483^2 + 7428^2 .

It is not a de Polignac number, because 145102473 - 2¹ = 145102471 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145102471) 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 in 5 ways as a sum of consecutive naturals, for example, 8061240 + ... + 8061257.

It is an arithmetic number, because the mean of its divisors is an integer number (34932079).

Almost surely, 2^145102473 is an apocalyptic number.

It is an amenable number.

145102473 is a deficient number, since it is larger than the sum of its proper divisors (64490001).

145102473 is a wasteful number, since it uses less digits than its factorization.

145102473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16122503 (or 16122500 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 145102473 is about 12045.8487870303. The cubic root of 145102473 is about 525.4825169367.

The spelling of 145102473 in words is "one hundred forty-five million, one hundred two thousand, four hundred seventy-three".