145040218 has 4 divisors (see below), whose sum is σ = 217560330. Its totient is φ = 72520108.

The previous prime is 145040183. The next prime is 145040219. The reversal of 145040218 is 812040541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 74597769 + 70442449 = 8637^2 + 8393^2 .

It is a junction number, because it is equal to n+sod(n) for n = 145040192 and 145040201.

It is not an unprimeable number, because it can be changed into a prime (145040219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36260053 + ... + 36260056.

Almost surely, 2^145040218 is an apocalyptic number.

145040218 is a deficient number, since it is larger than the sum of its proper divisors (72520112).

145040218 is an equidigital number, since it uses as much as digits as its factorization.

145040218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72520111.

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 145040218 is about 12043.2644245653. The cubic root of 145040218 is about 525.4073548965.

Adding to 145040218 its reverse (812040541), we get a palindrome (957080759).

The spelling of 145040218 in words is "one hundred forty-five million, forty thousand, two hundred eighteen".