140543241 has 4 divisors (see below), whose sum is σ = 187390992. Its totient is φ = 93695492.

The previous prime is 140543239. The next prime is 140543257. The reversal of 140543241 is 142345041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 142345041 = 3 ⋅47448347.

It is a cyclic number.

It is not a de Polignac number, because 140543241 - 2¹ = 140543239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140543141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23423871 + ... + 23423876.

It is an arithmetic number, because the mean of its divisors is an integer number (46847748).

Almost surely, 2^140543241 is an apocalyptic number.

It is an amenable number.

140543241 is a deficient number, since it is larger than the sum of its proper divisors (46847751).

140543241 is an equidigital number, since it uses as much as digits as its factorization.

140543241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46847750.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 140543241 is about 11855.0934623056. The cubic root of 140543241 is about 519.9201566267.

Adding to 140543241 its reverse (142345041), we get a palindrome (282888282).

The spelling of 140543241 in words is "one hundred forty million, five hundred forty-three thousand, two hundred forty-one".