42730122 has 8 divisors (see below), whose sum is σ = 85460256. Its totient is φ = 14243372.

The previous prime is 42730117. The next prime is 42730133. The reversal of 42730122 is 22103724.

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

42730122 is an admirable number.

It is a super-2 number, since 2×42730122² = 3651726652269768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3560838 + ... + 3560849.

It is an arithmetic number, because the mean of its divisors is an integer number (10682532).

Almost surely, 2^42730122 is an apocalyptic number.

42730122 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42730122 is a wasteful number, since it uses less digits than its factorization.

42730122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7121692.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 42730122 is about 6536.8281299113. The cubic root of 42730122 is about 349.6053292741.

Adding to 42730122 its reverse (22103724), we get a palindrome (64833846).

The spelling of 42730122 in words is "forty-two million, seven hundred thirty thousand, one hundred twenty-two".