42143122 has 16 divisors (see below), whose sum is σ = 72420480. Its totient is φ = 18017568.

The previous prime is 42143089. The next prime is 42143141. The reversal of 42143122 is 22134124.

It is a self number, because there is not a number n which added to its sum of digits gives 42143122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2718 + ... + 9574.

It is an arithmetic number, because the mean of its divisors is an integer number (4526280).

Almost surely, 2^42143122 is an apocalyptic number.

42143122 is a deficient number, since it is larger than the sum of its proper divisors (30277358).

42143122 is a wasteful number, since it uses less digits than its factorization.

42143122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7305.

The product of its digits is 384, while the sum is 19.

The square root of 42143122 is about 6491.7734094776. The cubic root of 42143122 is about 347.9970548480.

Adding to 42143122 its reverse (22134124), we get a palindrome (64277246).

The spelling of 42143122 in words is "forty-two million, one hundred forty-three thousand, one hundred twenty-two".