42779061 has 24 divisors (see below), whose sum is σ = 67092480. Its totient is φ = 26109216.

The previous prime is 42779047. The next prime is 42779063. The reversal of 42779061 is 16097724.

It is a happy number.

It is not a de Polignac number, because 42779061 - 2¹¹ = 42777013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42779063) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13420 + ... + 16298.

It is an arithmetic number, because the mean of its divisors is an integer number (2795520).

Almost surely, 2^42779061 is an apocalyptic number.

It is an amenable number.

42779061 is a deficient number, since it is larger than the sum of its proper divisors (24313419).

42779061 is a wasteful number, since it uses less digits than its factorization.

42779061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3025 (or 3022 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 42779061 is about 6540.5703879708. The cubic root of 42779061 is about 349.7387465355.

The spelling of 42779061 in words is "forty-two million, seven hundred seventy-nine thousand, sixty-one".