145418404 has 12 divisors (see below), whose sum is σ = 254834524. Its totient is φ = 72608544.

The previous prime is 145418353. The next prime is 145418411. The reversal of 145418404 is 404814541.

It can be written as a sum of positive squares in 2 ways, for example, as 78145600 + 67272804 = 8840^2 + 8202^2 .

It is a super-2 number, since 2×145418404² = 42293024443814432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21867 + ... + 27730.

Almost surely, 2^145418404 is an apocalyptic number.

It is an amenable number.

145418404 is a deficient number, since it is larger than the sum of its proper divisors (109416120).

145418404 is a wasteful number, since it uses less digits than its factorization.

145418404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50334 (or 50332 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 145418404 is about 12058.9553444733. The cubic root of 145418404 is about 525.8636174339.

The spelling of 145418404 in words is "one hundred forty-five million, four hundred eighteen thousand, four hundred four".