145404042 has 32 divisors (see below), whose sum is σ = 333370752. Its totient is φ = 41416704.

The previous prime is 145404037. The next prime is 145404073. The reversal of 145404042 is 240404541.

It is a happy number.

It is a super-2 number, since 2×145404042² = 42284670859875528, which contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 9018 + ... + 19290.

It is an arithmetic number, because the mean of its divisors is an integer number (10417836).

Almost surely, 2^145404042 is an apocalyptic number.

145404042 is an abundant number, since it is smaller than the sum of its proper divisors (187966710).

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

145404042 is a wasteful number, since it uses less digits than its factorization.

145404042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10622.

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 145404042 is about 12058.3598387177. The cubic root of 145404042 is about 525.8463048569.

Adding to 145404042 its reverse (240404541), we get a palindrome (385808583).

The spelling of 145404042 in words is "one hundred forty-five million, four hundred four thousand, forty-two".