540421430641 has 4 divisors (see below), whose sum is σ = 541952369892. Its totient is φ = 538890491392.

The previous prime is 540421430639. The next prime is 540421430683. The reversal of 540421430641 is 146034124045.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 413357699041 + 127063731600 = 642929^2 + 356460^2 .

It is a cyclic number.

It is not a de Polignac number, because 540421430641 - 2¹ = 540421430639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 540421430597 and 540421430606.

It is not an unprimeable number, because it can be changed into a prime (540421530641) 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, 765469096 + ... + 765469801.

It is an arithmetic number, because the mean of its divisors is an integer number (135488092473).

Almost surely, 2^540421430641 is an apocalyptic number.

It is an amenable number.

540421430641 is a deficient number, since it is larger than the sum of its proper divisors (1530939251).

540421430641 is a wasteful number, since it uses less digits than its factorization.

540421430641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1530939250.

The product of its (nonzero) digits is 46080, while the sum is 34.

Adding to 540421430641 its reverse (146034124045), we get a palindrome (686455554686).

The spelling of 540421430641 in words is "five hundred forty billion, four hundred twenty-one million, four hundred thirty thousand, six hundred forty-one".