42427434 has 24 divisors (see below), whose sum is σ = 98709408. Its totient is φ = 12122040.

The previous prime is 42427421. The next prime is 42427447. The reversal of 42427434 is 43472424.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42427421) and next prime (42427447).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71862 + ... + 72449.

It is an arithmetic number, because the mean of its divisors is an integer number (4112892).

Almost surely, 2^42427434 is an apocalyptic number.

42427434 is an abundant number, since it is smaller than the sum of its proper divisors (56281974).

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

42427434 is a wasteful number, since it uses less digits than its factorization.

42427434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144330 (or 144323 counting only the distinct ones).

The product of its digits is 21504, while the sum is 30.

The square root of 42427434 is about 6513.6344693266. The cubic root of 42427434 is about 348.7778708729. Note that the first 3 decimals are identical.

Adding to 42427434 its reverse (43472424), we get a palindrome (85899858).

The spelling of 42427434 in words is "forty-two million, four hundred twenty-seven thousand, four hundred thirty-four".