42200042 has 4 divisors (see below), whose sum is σ = 63300066. Its totient is φ = 21100020.

The previous prime is 42200023. The next prime is 42200077. The reversal of 42200042 is 24000224.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 27994681 + 14205361 = 5291^2 + 3769^2 .

It is a zygodrome in base 4.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10550009 + ... + 10550012.

Almost surely, 2^42200042 is an apocalyptic number.

42200042 is a deficient number, since it is larger than the sum of its proper divisors (21100024).

42200042 is a wasteful number, since it uses less digits than its factorization.

42200042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21100023.

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 42200042 is about 6496.1559402465. The cubic root of 42200042 is about 348.1536567664.

Adding to 42200042 its reverse (24000224), we get a palindrome (66200266).

The spelling of 42200042 in words is "forty-two million, two hundred thousand, forty-two".