1012440143 has 8 divisors (see below), whose sum is σ = 1189440336. Its totient is φ = 849600000.

The previous prime is 1012440133. The next prime is 1012440157. The reversal of 1012440143 is 3410442101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1012440143 - 2⁴ = 1012440127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012440133) 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, 3539858 + ... + 3540143.

It is an arithmetic number, because the mean of its divisors is an integer number (148680042).

Almost surely, 2^1012440143 is an apocalyptic number.

1012440143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1012440143 is a deficient number, since it is larger than the sum of its proper divisors (177000193).

1012440143 is a wasteful number, since it uses less digits than its factorization.

1012440143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7080025.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1012440143 is about 31818.8645774798. The cubic root of 1012440143 is about 1004.1296369565.

Adding to 1012440143 its reverse (3410442101), we get a palindrome (4422882244).

The spelling of 1012440143 in words is "one billion, twelve million, four hundred forty thousand, one hundred forty-three".