1401444143 has 6 divisors (see below), whose sum is σ = 1540430472. Its totient is φ = 1274040020.

The previous prime is 1401444101. The next prime is 1401444151. The reversal of 1401444143 is 3414441041.

It is not a de Polignac number, because 1401444143 - 2²⁸ = 1133008687 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 (1401444043) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5790971 + ... + 5791212.

It is an arithmetic number, because the mean of its divisors is an integer number (256738412).

Almost surely, 2^1401444143 is an apocalyptic number.

1401444143 is a deficient number, since it is larger than the sum of its proper divisors (138986329).

1401444143 is a wasteful number, since it uses less digits than its factorization.

1401444143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11582205 (or 11582194 counting only the distinct ones).

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

The square root of 1401444143 is about 37435.8670662241. The cubic root of 1401444143 is about 1119.0734638975.

Adding to 1401444143 its reverse (3414441041), we get a palindrome (4815885184).

It can be divided in two parts, 1401 and 444143, that added together give a palindrome (445544).

The spelling of 1401444143 in words is "one billion, four hundred one million, four hundred forty-four thousand, one hundred forty-three".