540242504123 has 6 divisors (see below), whose sum is σ = 628445361996. Its totient is φ = 463065003492.

The previous prime is 540242504033. The next prime is 540242504183. The reversal of 540242504123 is 321405242045.

It is not a de Polignac number, because 540242504123 - 2¹⁶ = 540242438587 is a prime.

It is a super-2 number, since 2×540242504123² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 540242504123.

It is not an unprimeable number, because it can be changed into a prime (540242504183) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5512678565 + ... + 5512678662.

It is an arithmetic number, because the mean of its divisors is an integer number (104740893666).

Almost surely, 2^540242504123 is an apocalyptic number.

540242504123 is a deficient number, since it is larger than the sum of its proper divisors (88202857873).

540242504123 is a wasteful number, since it uses less digits than its factorization.

540242504123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11025357241 (or 11025357234 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 32.

Adding to 540242504123 its reverse (321405242045), we get a palindrome (861647746168).

The spelling of 540242504123 in words is "five hundred forty billion, two hundred forty-two million, five hundred four thousand, one hundred twenty-three".