145344442 has 16 divisors (see below), whose sum is σ = 221320512. Its totient is φ = 71579200.

The previous prime is 145344403. The next prime is 145344457. The reversal of 145344442 is 244443541.

It is a super-2 number, since 2×145344442² = 42250013640582728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35817 + ... + 39667.

It is an arithmetic number, because the mean of its divisors is an integer number (13832532).

Almost surely, 2^145344442 is an apocalyptic number.

145344442 is a deficient number, since it is larger than the sum of its proper divisors (75976070).

145344442 is a wasteful number, since it uses less digits than its factorization.

145344442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4133.

The product of its digits is 30720, while the sum is 31.

The square root of 145344442 is about 12055.8882708824. Note that the first 3 decimals coincide. The cubic root of 145344442 is about 525.7744482511.

Adding to 145344442 its reverse (244443541), we get a palindrome (389787983).

Subtracting 145344442 from its reverse (244443541), we obtain a palindrome (99099099).

The spelling of 145344442 in words is "one hundred forty-five million, three hundred forty-four thousand, four hundred forty-two".