42730100 has 36 divisors (see below), whose sum is σ = 105972384. Its totient is φ = 14650080.

The previous prime is 42730099. The next prime is 42730109. The reversal of 42730100 is 103724.

It is a happy number.

It is a super-2 number, since 2×42730100² = 3651722892020000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42730109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29822 + ... + 31221.

Almost surely, 2^42730100 is an apocalyptic number.

It is an amenable number.

42730100 is an abundant number, since it is smaller than the sum of its proper divisors (63242284).

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

42730100 is a wasteful number, since it uses less digits than its factorization.

42730100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61064 (or 61057 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 42730100 is about 6536.8264471378. The cubic root of 42730100 is about 349.6052692749.

Adding to 42730100 its reverse (103724), we get a palindrome (42833824).

The spelling of 42730100 in words is "forty-two million, seven hundred thirty thousand, one hundred".