1400143244 has 12 divisors (see below), whose sum is σ = 2452383864. Its totient is φ = 699462144.

The previous prime is 1400143223. The next prime is 1400143249. The reversal of 1400143244 is 4423410041.

It is a happy number.

It is a super-2 number, since 2×1400143244² = 3920802207437687072, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1400143249) 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, 147182 + ... + 156405.

It is an arithmetic number, because the mean of its divisors is an integer number (204365322).

Almost surely, 2^1400143244 is an apocalyptic number.

It is an amenable number.

1400143244 is a deficient number, since it is larger than the sum of its proper divisors (1052240620).

1400143244 is a wasteful number, since it uses less digits than its factorization.

1400143244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304744 (or 304742 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1400143244 is about 37418.4879972454. The cubic root of 1400143244 is about 1118.7270944656.

Adding to 1400143244 its reverse (4423410041), we get a palindrome (5823553285).

The spelling of 1400143244 in words is "one billion, four hundred million, one hundred forty-three thousand, two hundred forty-four".