145942218 has 24 divisors (see below), whose sum is σ = 317070468. Its totient is φ = 48514752.

The previous prime is 145942201. The next prime is 145942219. The reversal of 145942218 is 812249541.

145942218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 136960209 + 8982009 = 11703^2 + 2997^2 .

It is not an unprimeable number, because it can be changed into a prime (145942219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4155 + ... + 17582.

Almost surely, 2^145942218 is an apocalyptic number.

145942218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

145942218 is an abundant number, since it is smaller than the sum of its proper divisors (171128250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145942218 is a wasteful number, since it uses less digits than its factorization.

145942218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22118 (or 22115 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 145942218 is about 12080.6547008016. The cubic root of 145942218 is about 526.4942681118.

The spelling of 145942218 in words is "one hundred forty-five million, nine hundred forty-two thousand, two hundred eighteen".