140019541 has 2 divisors, whose sum is σ = 140019542. Its totient is φ = 140019540.

The previous prime is 140019527. The next prime is 140019553. The reversal of 140019541 is 145910041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127916100 + 12103441 = 11310^2 + 3479^2 .

It is a cyclic number.

It is not a de Polignac number, because 140019541 - 2⁷ = 140019413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140019571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70009770 + 70009771.

It is an arithmetic number, because the mean of its divisors is an integer number (70009771).

Almost surely, 2^140019541 is an apocalyptic number.

It is an amenable number.

140019541 is a deficient number, since it is larger than the sum of its proper divisors (1).

140019541 is an equidigital number, since it uses as much as digits as its factorization.

140019541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 140019541 is about 11832.9852953513. The cubic root of 140019541 is about 519.2735677581.

Adding to 140019541 its reverse (145910041), we get a palindrome (285929582).

The spelling of 140019541 in words is "one hundred forty million, nineteen thousand, five hundred forty-one".