144665940 has 48 divisors (see below), whose sum is σ = 409631040. Its totient is φ = 38142720.

The previous prime is 144665909. The next prime is 144665951. The reversal of 144665940 is 49566441.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8206 + ... + 18885.

It is an arithmetic number, because the mean of its divisors is an integer number (8533980).

Almost surely, 2^144665940 is an apocalyptic number.

144665940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144665940 is an abundant number, since it is smaller than the sum of its proper divisors (264965100).

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

144665940 is a wasteful number, since it uses less digits than its factorization.

144665940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27192 (or 27190 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 144665940 is about 12027.7154938085. The cubic root of 144665940 is about 524.9550256258.

The spelling of 144665940 in words is "one hundred forty-four million, six hundred sixty-five thousand, nine hundred forty".