1242143144 has 32 divisors (see below), whose sum is σ = 2542177440. Its totient is φ = 564292800.

The previous prime is 1242143143. The next prime is 1242143153. The reversal of 1242143144 is 4413412421.

It is not an unprimeable number, because it can be changed into a prime (1242143143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233474 + ... + 238734.

It is an arithmetic number, because the mean of its divisors is an integer number (79443045).

Almost surely, 2^1242143144 is an apocalyptic number.

It is an amenable number.

1242143144 is an abundant number, since it is smaller than the sum of its proper divisors (1300034296).

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

1242143144 is a wasteful number, since it uses less digits than its factorization.

1242143144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7961 (or 7957 counting only the distinct ones).

The product of its digits is 3072, while the sum is 26.

The square root of 1242143144 is about 35244.0511859803. The cubic root of 1242143144 is about 1074.9556553548.

Adding to 1242143144 its reverse (4413412421), we get a palindrome (5655555565).

The spelling of 1242143144 in words is "one billion, two hundred forty-two million, one hundred forty-three thousand, one hundred forty-four".