42774252541 has 4 divisors (see below), whose sum is σ = 42961039900. Its totient is φ = 42587465184.

The previous prime is 42774252533. The next prime is 42774252571. The reversal of 42774252541 is 14525247724.

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 36681825625 + 6092426916 = 191525^2 + 78054^2 .

It is a cyclic number.

It is not a de Polignac number, because 42774252541 - 2³ = 42774252533 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 (42774252511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93393336 + ... + 93393793.

It is an arithmetic number, because the mean of its divisors is an integer number (10740259975).

Almost surely, 2^42774252541 is an apocalyptic number.

It is an amenable number.

42774252541 is a deficient number, since it is larger than the sum of its proper divisors (186787359).

42774252541 is a wasteful number, since it uses less digits than its factorization.

42774252541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186787358.

The product of its digits is 627200, while the sum is 43.

The spelling of 42774252541 in words is "forty-two billion, seven hundred seventy-four million, two hundred fifty-two thousand, five hundred forty-one".