144909420 has 48 divisors (see below), whose sum is σ = 413411040. Its totient is φ = 37912576.

The previous prime is 144909397. The next prime is 144909431. The reversal of 144909420 is 24909441.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19605 + ... + 25964.

It is an arithmetic number, because the mean of its divisors is an integer number (8612730).

Almost surely, 2^144909420 is an apocalyptic number.

144909420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144909420 is an abundant number, since it is smaller than the sum of its proper divisors (268501620).

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

144909420 is a wasteful number, since it uses less digits than its factorization.

144909420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45634 (or 45632 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 144909420 is about 12037.8328614415. The cubic root of 144909420 is about 525.2493690621.

The spelling of 144909420 in words is "one hundred forty-four million, nine hundred nine thousand, four hundred twenty".