42222142 has 16 divisors (see below), whose sum is σ = 66844800. Its totient is φ = 19946520.

The previous prime is 42222139. The next prime is 42222221. The reversal of 42222142 is 24122224.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

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, 15417 + ... + 17947.

It is an arithmetic number, because the mean of its divisors is an integer number (4177800).

Almost surely, 2^42222142 is an apocalyptic number.

42222142 is a deficient number, since it is larger than the sum of its proper divisors (24622658).

42222142 is a wasteful number, since it uses less digits than its factorization.

42222142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2991.

The product of its digits is 512, while the sum is 19.

The square root of 42222142 is about 6497.8567235666. The cubic root of 42222142 is about 348.2144217380.

Adding to 42222142 its reverse (24122224), we get a palindrome (66344366).

The spelling of 42222142 in words is "forty-two million, two hundred twenty-two thousand, one hundred forty-two".