1224400143 has 16 divisors (see below), whose sum is σ = 1658764800. Its totient is φ = 803178816.

The previous prime is 1224400141. The next prime is 1224400153. The reversal of 1224400143 is 3410044221.

It is not a de Polignac number, because 1224400143 - 2¹ = 1224400141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224400141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207946 + ... + 213752.

It is an arithmetic number, because the mean of its divisors is an integer number (103672800).

Almost surely, 2^1224400143 is an apocalyptic number.

1224400143 is a deficient number, since it is larger than the sum of its proper divisors (434364657).

1224400143 is a wasteful number, since it uses less digits than its factorization.

1224400143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6926.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1224400143 is about 34991.4295649663. The cubic root of 1224400143 is about 1069.8128018511.

Adding to 1224400143 its reverse (3410044221), we get a palindrome (4634444364).

The spelling of 1224400143 in words is "one billion, two hundred twenty-four million, four hundred thousand, one hundred forty-three".