145244002 has 4 divisors (see below), whose sum is σ = 217866006. Its totient is φ = 72622000.

The previous prime is 145243991. The next prime is 145244041. The reversal of 145244002 is 200442541.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 84107241 + 61136761 = 9171^2 + 7819^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 as a sum of consecutive naturals, namely, 36310999 + ... + 36311002.

Almost surely, 2^145244002 is an apocalyptic number.

145244002 is a deficient number, since it is larger than the sum of its proper divisors (72622004).

145244002 is an equidigital number, since it uses as much as digits as its factorization.

145244002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72622003.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 145244002 is about 12051.7219516549. The cubic root of 145244002 is about 525.6533085318.

Adding to 145244002 its reverse (200442541), we get a palindrome (345686543).

It can be divided in two parts, 1452 and 44002, that added together give a palindrome (45454).

The spelling of 145244002 in words is "one hundred forty-five million, two hundred forty-four thousand, two".