1440213141 has 8 divisors (see below), whose sum is σ = 1921662400. Its totient is φ = 959452992.

The previous prime is 1440213133. The next prime is 1440213143. The reversal of 1440213141 is 1413120441.

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

It is not a de Polignac number, because 1440213141 - 2³ = 1440213133 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 (1440213143) 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, 167380 + ... + 175773.

It is an arithmetic number, because the mean of its divisors is an integer number (240207800).

Almost surely, 2^1440213141 is an apocalyptic number.

It is an amenable number.

1440213141 is a deficient number, since it is larger than the sum of its proper divisors (481449259).

1440213141 is a wasteful number, since it uses less digits than its factorization.

1440213141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344555.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 1440213141 is about 37950.1401973695. The cubic root of 1440213141 is about 1129.2989467309.

Adding to 1440213141 its reverse (1413120441), we get a palindrome (2853333582).

The spelling of 1440213141 in words is "one billion, four hundred forty million, two hundred thirteen thousand, one hundred forty-one".