540266421 has 4 divisors (see below), whose sum is σ = 720355232. Its totient is φ = 360177612.

The previous prime is 540266417. The next prime is 540266423. The reversal of 540266421 is 124662045.

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.

It is not a de Polignac number, because 540266421 - 2² = 540266417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (540266423) 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, 90044401 + ... + 90044406.

It is an arithmetic number, because the mean of its divisors is an integer number (180088808).

Almost surely, 2^540266421 is an apocalyptic number.

It is an amenable number.

540266421 is a deficient number, since it is larger than the sum of its proper divisors (180088811).

540266421 is a wasteful number, since it uses less digits than its factorization.

540266421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180088810.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 540266421 is about 23243.6318375593. The cubic root of 540266421 is about 814.4591847852.

The spelling of 540266421 in words is "five hundred forty million, two hundred sixty-six thousand, four hundred twenty-one".