144413507 has 4 divisors (see below), whose sum is σ = 165044016. Its totient is φ = 123783000.

The previous prime is 144413497. The next prime is 144413539. The reversal of 144413507 is 705314441.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 144413507 - 2¹² = 144409411 is a prime.

It is a super-2 number, since 2×144413507² = 41710522008078098, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 144413507.

It is not an unprimeable number, because it can be changed into a prime (144413587) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 10315244 + ... + 10315257.

It is an arithmetic number, because the mean of its divisors is an integer number (41261004).

Almost surely, 2^144413507 is an apocalyptic number.

144413507 is a deficient number, since it is larger than the sum of its proper divisors (20630509).

144413507 is an equidigital number, since it uses as much as digits as its factorization.

144413507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20630508.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 144413507 is about 12017.2171071342. The cubic root of 144413507 is about 524.6495099803.

Adding to 144413507 its reverse (705314441), we get a palindrome (849727948).

The spelling of 144413507 in words is "one hundred forty-four million, four hundred thirteen thousand, five hundred seven".