42280434 has 144 divisors (see below), whose sum is σ = 119152800. Its totient is φ = 11049696.

The previous prime is 42280423. The next prime is 42280439. The reversal of 42280434 is 43408224.

It is a happy number.

42280434 is a `hidden beast` number, since 4 + 228 + 0 + 434 = 666.

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 = 42280398 and 42280407.

It is not an unprimeable number, because it can be changed into a prime (42280439) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1457932 + ... + 1457960.

It is an arithmetic number, because the mean of its divisors is an integer number (827450).

Almost surely, 2^42280434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42280434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59576400).

42280434 is an abundant number, since it is smaller than the sum of its proper divisors (76872366).

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

42280434 is a wasteful number, since it uses less digits than its factorization.

42280434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 60 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 42280434 is about 6502.3406554871. The cubic root of 42280434 is about 348.3745966294.

Adding to 42280434 its reverse (43408224), we get a palindrome (85688658).

The spelling of 42280434 in words is "forty-two million, two hundred eighty thousand, four hundred thirty-four".