540123547 has 2 divisors, whose sum is σ = 540123548. Its totient is φ = 540123546.

The previous prime is 540123539. The next prime is 540123581. The reversal of 540123547 is 745321045.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 540123547 - 2³ = 540123539 is a prime.

It is a super-2 number, since 2×540123547² = 583466892047722418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (540123047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270061773 + 270061774.

It is an arithmetic number, because the mean of its divisors is an integer number (270061774).

Almost surely, 2^540123547 is an apocalyptic number.

540123547 is a deficient number, since it is larger than the sum of its proper divisors (1).

540123547 is an equidigital number, since it uses as much as digits as its factorization.

540123547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 540123547 is about 23240.5582333988. The cubic root of 540123547 is about 814.3873836046.

The spelling of 540123547 in words is "five hundred forty million, one hundred twenty-three thousand, five hundred forty-seven".