140554641 has 4 divisors (see below), whose sum is σ = 187406192. Its totient is φ = 93703092.

The previous prime is 140554637. The next prime is 140554643. The reversal of 140554641 is 146455041.

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: 146455041 = 3 ⋅48818347.

It is not a de Polignac number, because 140554641 - 2² = 140554637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140554599 and 140554608.

It is not an unprimeable number, because it can be changed into a prime (140554643) 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, 23425771 + ... + 23425776.

It is an arithmetic number, because the mean of its divisors is an integer number (46851548).

Almost surely, 2^140554641 is an apocalyptic number.

It is an amenable number.

140554641 is a deficient number, since it is larger than the sum of its proper divisors (46851551).

140554641 is an equidigital number, since it uses as much as digits as its factorization.

140554641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46851550.

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 140554641 is about 11855.5742585503. The cubic root of 140554641 is about 519.9342138177.

Subtracting from 140554641 its product of nonzero digits (9600), we obtain a palindrome (140545041).

The spelling of 140554641 in words is "one hundred forty million, five hundred fifty-four thousand, six hundred forty-one".