542146262461 has 4 divisors (see below), whose sum is σ = 542159185500. Its totient is φ = 542133339424.

The previous prime is 542146262453. The next prime is 542146262501. The reversal of 542146262461 is 164262641245.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 164262641245 = 5 ⋅32852528249.

It can be written as a sum of positive squares in 2 ways, for example, as 267340702500 + 274805559961 = 517050^2 + 524219^2 .

It is a cyclic number.

It is not a de Polignac number, because 542146262461 - 2³ = 542146262453 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 (542146262261) 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, 6398386 + ... + 6482563.

It is an arithmetic number, because the mean of its divisors is an integer number (135539796375).

Almost surely, 2^542146262461 is an apocalyptic number.

It is an amenable number.

542146262461 is a deficient number, since it is larger than the sum of its proper divisors (12923039).

542146262461 is a wasteful number, since it uses less digits than its factorization.

542146262461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12923038.

The product of its digits is 552960, while the sum is 43.

The spelling of 542146262461 in words is "five hundred forty-two billion, one hundred forty-six million, two hundred sixty-two thousand, four hundred sixty-one".