42779307 has 8 divisors (see below), whose sum is σ = 58006080. Its totient is φ = 28036040.

The previous prime is 42779291. The next prime is 42779309. The reversal of 42779307 is 70397724.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42779307 - 2⁴ = 42779291 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42779309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120669 + ... + 121022.

It is an arithmetic number, because the mean of its divisors is an integer number (7250760).

Almost surely, 2^42779307 is an apocalyptic number.

42779307 is a deficient number, since it is larger than the sum of its proper divisors (15226773).

42779307 is a wasteful number, since it uses less digits than its factorization.

42779307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241753.

The product of its (nonzero) digits is 74088, while the sum is 39.

The square root of 42779307 is about 6540.5891936430. The cubic root of 42779307 is about 349.7394169224.

The spelling of 42779307 in words is "forty-two million, seven hundred seventy-nine thousand, three hundred seven".