42706273 has 6 divisors (see below), whose sum is σ = 43013922. Its totient is φ = 42400800.

The previous prime is 42706271. The next prime is 42706303. The reversal of 42706273 is 37260724.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 24830289 + 17875984 = 4983^2 + 4228^2 .

It is not a de Polignac number, because 42706273 - 2¹ = 42706271 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42706271) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21865 + ... + 23737.

It is an arithmetic number, because the mean of its divisors is an integer number (7168987).

Almost surely, 2^42706273 is an apocalyptic number.

It is an amenable number.

42706273 is a deficient number, since it is larger than the sum of its proper divisors (307649).

42706273 is an equidigital number, since it uses as much as digits as its factorization.

42706273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2175 (or 2024 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 31.

The square root of 42706273 is about 6535.0036725315. The cubic root of 42706273 is about 349.5402753280.

Adding to 42706273 its reverse (37260724), we get a palindrome (79966997).

The spelling of 42706273 in words is "forty-two million, seven hundred six thousand, two hundred seventy-three".