144540012 has 12 divisors (see below), whose sum is σ = 337260056. Its totient is φ = 48180000.

The previous prime is 144539963. The next prime is 144540013. The reversal of 144540012 is 210045441.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (144540013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6022489 + ... + 6022512.

Almost surely, 2^144540012 is an apocalyptic number.

144540012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

144540012 is an abundant number, since it is smaller than the sum of its proper divisors (192720044).

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

144540012 is a wasteful number, since it uses less digits than its factorization.

144540012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12045008 (or 12045006 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 144540012 is about 12022.4794447734. The cubic root of 144540012 is about 524.8026614340.

Adding to 144540012 its reverse (210045441), we get a palindrome (354585453).

The spelling of 144540012 in words is "one hundred forty-four million, five hundred forty thousand, twelve".