42772347 has 16 divisors (see below), whose sum is σ = 63739680. Its totient is φ = 28346976.

The previous prime is 42772339. The next prime is 42772351. The reversal of 42772347 is 74327724.

It is not a de Polignac number, because 42772347 - 2³ = 42772339 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (42772747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93 + ... + 9249.

It is an arithmetic number, because the mean of its divisors is an integer number (3983730).

Almost surely, 2^42772347 is an apocalyptic number.

42772347 is a deficient number, since it is larger than the sum of its proper divisors (20967333).

42772347 is a wasteful number, since it uses less digits than its factorization.

42772347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9339 (or 9333 counting only the distinct ones).

The product of its digits is 65856, while the sum is 36.

The square root of 42772347 is about 6540.0571098424. The cubic root of 42772347 is about 349.7204488859.

The spelling of 42772347 in words is "forty-two million, seven hundred seventy-two thousand, three hundred forty-seven".