42161430 has 32 divisors (see below), whose sum is σ = 102091104. Its totient is φ = 11142656.

The previous prime is 42161423. The next prime is 42161443. The reversal of 42161430 is 3416124.

It is a junction number, because it is equal to n+sod(n) for n = 42161397 and 42161406.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 2829 + ... + 9608.

It is an arithmetic number, because the mean of its divisors is an integer number (3190347).

Almost surely, 2^42161430 is an apocalyptic number.

42161430 is an abundant number, since it is smaller than the sum of its proper divisors (59929674).

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

42161430 is a wasteful number, since it uses less digits than its factorization.

42161430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12560.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 42161430 is about 6493.1833487127. The cubic root of 42161430 is about 348.0474403551.

Adding to 42161430 its reverse (3416124), we get a palindrome (45577554).

The spelling of 42161430 in words is "forty-two million, one hundred sixty-one thousand, four hundred thirty".