144442920 has 32 divisors (see below), whose sum is σ = 433329120. Its totient is φ = 38518080.

The previous prime is 144442913. The next prime is 144442951. The reversal of 144442920 is 29244441.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 601726 + ... + 601965.

It is an arithmetic number, because the mean of its divisors is an integer number (13541535).

Almost surely, 2^144442920 is an apocalyptic number.

144442920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144442920 is an abundant number, since it is smaller than the sum of its proper divisors (288886200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

144442920 is a wasteful number, since it uses less digits than its factorization.

144442920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1203705 (or 1203701 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 144442920 is about 12018.4408306569. The cubic root of 144442920 is about 524.6851263821.

The spelling of 144442920 in words is "one hundred forty-four million, four hundred forty-two thousand, nine hundred twenty".