42780430 has 48 divisors (see below), whose sum is σ = 97732656. Its totient is φ = 13332480.

The previous prime is 42780421. The next prime is 42780443. The reversal of 42780430 is 3408724.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1422 + ... + 9358.

It is an arithmetic number, because the mean of its divisors is an integer number (2036097).

Almost surely, 2^42780430 is an apocalyptic number.

42780430 is an abundant number, since it is smaller than the sum of its proper divisors (54952226).

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

42780430 is a wasteful number, since it uses less digits than its factorization.

42780430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7969 (or 7962 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 42780430 is about 6540.6750416146. The cubic root of 42780430 is about 349.7424772332.

The spelling of 42780430 in words is "forty-two million, seven hundred eighty thousand, four hundred thirty".