42051224 has 16 divisors (see below), whose sum is σ = 79468800. Its totient is φ = 20859552.

The previous prime is 42051223. The next prime is 42051239. The reversal of 42051224 is 42215024.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 42051196 and 42051205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42051223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19679 + ... + 21710.

It is an arithmetic number, because the mean of its divisors is an integer number (4966800).

Almost surely, 2^42051224 is an apocalyptic number.

It is an amenable number.

42051224 is a deficient number, since it is larger than the sum of its proper divisors (37417576).

42051224 is a wasteful number, since it uses less digits than its factorization.

42051224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41522 (or 41518 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 42051224 is about 6484.6915115524. The cubic root of 42051224 is about 347.7439213545.

Adding to 42051224 its reverse (42215024), we get a palindrome (84266248).

The spelling of 42051224 in words is "forty-two million, fifty-one thousand, two hundred twenty-four".