42812420 has 24 divisors (see below), whose sum is σ = 102750144. Its totient is φ = 14678496.

The previous prime is 42812401. The next prime is 42812447. The reversal of 42812420 is 2421824.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152762 + ... + 153041.

It is an arithmetic number, because the mean of its divisors is an integer number (4281256).

Almost surely, 2^42812420 is an apocalyptic number.

It is an amenable number.

42812420 is an abundant number, since it is smaller than the sum of its proper divisors (59937724).

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

42812420 is a wasteful number, since it uses less digits than its factorization.

42812420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305819 (or 305817 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 42812420 is about 6543.1200508626. The cubic root of 42812420 is about 349.8296313693.

The spelling of 42812420 in words is "forty-two million, eight hundred twelve thousand, four hundred twenty".