42774318149 has 4 divisors (see below), whose sum is σ = 44634071136. Its totient is φ = 40914565164.

The previous prime is 42774318127. The next prime is 42774318151. The reversal of 42774318149 is 94181347724.

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 a cyclic number.

It is not a de Polignac number, because 42774318149 - 2²⁸ = 42505882693 is a prime.

It is a super-2 number, since 2×42774318149² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42774318097 and 42774318106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42774318649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 929876459 + ... + 929876504.

It is an arithmetic number, because the mean of its divisors is an integer number (11158517784).

Almost surely, 2^42774318149 is an apocalyptic number.

It is an amenable number.

42774318149 is a deficient number, since it is larger than the sum of its proper divisors (1859752987).

42774318149 is a wasteful number, since it uses less digits than its factorization.

42774318149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1859752986.

The product of its digits is 1354752, while the sum is 50.

The spelling of 42774318149 in words is "forty-two billion, seven hundred seventy-four million, three hundred eighteen thousand, one hundred forty-nine".