42779151 has 8 divisors (see below), whose sum is σ = 63376560. Its totient is φ = 28519416.

The previous prime is 42779137. The next prime is 42779161. The reversal of 42779151 is 15197724.

It is a happy number.

It is not a de Polignac number, because 42779151 - 2¹¹ = 42777103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42779131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 792180 + ... + 792233.

It is an arithmetic number, because the mean of its divisors is an integer number (7922070).

Almost surely, 2^42779151 is an apocalyptic number.

42779151 is a deficient number, since it is larger than the sum of its proper divisors (20597409).

42779151 is a wasteful number, since it uses less digits than its factorization.

42779151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1584422 (or 1584416 counting only the distinct ones).

The product of its digits is 17640, while the sum is 36.

The square root of 42779151 is about 6540.5772681010. The cubic root of 42779151 is about 349.7389917993.

The spelling of 42779151 in words is "forty-two million, seven hundred seventy-nine thousand, one hundred fifty-one".