42772339 has 2 divisors, whose sum is σ = 42772340. Its totient is φ = 42772338.

The previous prime is 42772321. The next prime is 42772351. The reversal of 42772339 is 93327724.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42772339 - 2¹¹ = 42770291 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42772298 and 42772307.

It is not a weakly prime, because it can be changed into another prime (42772309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21386169 + 21386170.

It is an arithmetic number, because the mean of its divisors is an integer number (21386170).

Almost surely, 2^42772339 is an apocalyptic number.

42772339 is a deficient number, since it is larger than the sum of its proper divisors (1).

42772339 is an equidigital number, since it uses as much as digits as its factorization.

42772339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 37.

The square root of 42772339 is about 6540.0564982269. The cubic root of 42772339 is about 349.7204270824.

The spelling of 42772339 in words is "forty-two million, seven hundred seventy-two thousand, three hundred thirty-nine".