42770430 has 56 divisors (see below), whose sum is σ = 115447032. Its totient is φ = 11403504.

The previous prime is 42770407. The next prime is 42770437. The reversal of 42770430 is 3407724.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 42770394 and 42770403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42770437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 4357 + ... + 10223.

Almost surely, 2^42770430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42770430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57723516).

42770430 is an abundant number, since it is smaller than the sum of its proper divisors (72676602).

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

42770430 is an equidigital number, since it uses as much as digits as its factorization.

42770430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5892 (or 5877 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 42770430 is about 6539.9105498470. The cubic root of 42770430 is about 349.7152241386.

The spelling of 42770430 in words is "forty-two million, seven hundred seventy thousand, four hundred thirty".