1400012144 has 20 divisors (see below), whose sum is σ = 2736531696. Its totient is φ = 693810432.

The previous prime is 1400012143. The next prime is 1400012161. The reversal of 1400012144 is 4412100041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400012143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 385364 + ... + 388979.

Almost surely, 2^1400012144 is an apocalyptic number.

It is an amenable number.

1400012144 is a deficient number, since it is larger than the sum of its proper divisors (1336519552).

1400012144 is a wasteful number, since it uses less digits than its factorization.

1400012144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774464 (or 774458 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 1400012144 is about 37416.7361484136. The cubic root of 1400012144 is about 1118.6921766812.

Adding to 1400012144 its reverse (4412100041), we get a palindrome (5812112185).

The spelling of 1400012144 in words is "one billion, four hundred million, twelve thousand, one hundred forty-four".