145312442 has 16 divisors (see below), whose sum is σ = 240796800. Its totient is φ = 65214240.

The previous prime is 145312439. The next prime is 145312451. The reversal of 145312442 is 244213541.

145312442 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×145312442² = 42231411600006728, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40067 + ... + 43542.

It is an arithmetic number, because the mean of its divisors is an integer number (15049800).

Almost surely, 2^145312442 is an apocalyptic number.

145312442 is a deficient number, since it is larger than the sum of its proper divisors (95484358).

145312442 is a wasteful number, since it uses less digits than its factorization.

145312442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83701.

The product of its digits is 3840, while the sum is 26.

The square root of 145312442 is about 12054.5610455130. The cubic root of 145312442 is about 525.7358594180.

Adding to 145312442 its reverse (244213541), we get a palindrome (389525983).

The spelling of 145312442 in words is "one hundred forty-five million, three hundred twelve thousand, four hundred forty-two".