140243441 has 16 divisors (see below), whose sum is σ = 156038400. Its totient is φ = 125228928.

The previous prime is 140243437. The next prime is 140243497. The reversal of 140243441 is 144342041.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 140243441 - 2² = 140243437 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140243401) 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, 53090 + ... + 55668.

It is an arithmetic number, because the mean of its divisors is an integer number (9752400).

Almost surely, 2^140243441 is an apocalyptic number.

It is an amenable number.

140243441 is a deficient number, since it is larger than the sum of its proper divisors (15794959).

140243441 is a wasteful number, since it uses less digits than its factorization.

140243441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2728.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 140243441 is about 11842.4423578922. The cubic root of 140243441 is about 519.5502039908.

Adding to 140243441 its reverse (144342041), we get a palindrome (284585482).

The spelling of 140243441 in words is "one hundred forty million, two hundred forty-three thousand, four hundred forty-one".