144442915 has 16 divisors (see below), whose sum is σ = 176774400. Its totient is φ = 113270752.

The previous prime is 144442913. The next prime is 144442951. The reversal of 144442915 is 519244441.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 144442915 - 2¹ = 144442913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (144442913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 194034 + ... + 194776.

It is an arithmetic number, because the mean of its divisors is an integer number (11048400).

Almost surely, 2^144442915 is an apocalyptic number.

144442915 is a deficient number, since it is larger than the sum of its proper divisors (32331485).

144442915 is an equidigital number, since it uses as much as digits as its factorization.

144442915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1466.

The product of its digits is 23040, while the sum is 34.

The square root of 144442915 is about 12018.4406226432. The cubic root of 144442915 is about 524.6851203280.

The spelling of 144442915 in words is "one hundred forty-four million, four hundred forty-two thousand, nine hundred fifteen".