154440012 has 12 divisors (see below), whose sum is σ = 360360056. Its totient is φ = 51480000.

The previous prime is 154439969. The next prime is 154440017. The reversal of 154440012 is 210044451.

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 (154440017) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6434989 + ... + 6435012.

Almost surely, 2^154440012 is an apocalyptic number.

154440012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

154440012 is an abundant number, since it is smaller than the sum of its proper divisors (205920044).

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

154440012 is a wasteful number, since it uses less digits than its factorization.

154440012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12870008 (or 12870006 counting only the distinct ones).

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

The square root of 154440012 is about 12427.3895891293. The cubic root of 154440012 is about 536.5208561004.

Adding to 154440012 its reverse (210044451), we get a palindrome (364484463).

The spelling of 154440012 in words is "one hundred fifty-four million, four hundred forty thousand, twelve".