42219524 has 6 divisors (see below), whose sum is σ = 73884174. Its totient is φ = 21109760.

The previous prime is 42219523. The next prime is 42219571. The reversal of 42219524 is 42591224.

It can be written as a sum of positive squares in only one way, i.e., 26853124 + 15366400 = 5182^2 + 3920^2 .

It is not an unprimeable number, because it can be changed into a prime (42219521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5277437 + ... + 5277444.

It is an arithmetic number, because the mean of its divisors is an integer number (12314029).

Almost surely, 2^42219524 is an apocalyptic number.

It is an amenable number.

42219524 is a deficient number, since it is larger than the sum of its proper divisors (31664650).

42219524 is a wasteful number, since it uses less digits than its factorization.

42219524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10554885 (or 10554883 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 42219524 is about 6497.6552694030. The cubic root of 42219524 is about 348.2072245333.

The spelling of 42219524 in words is "forty-two million, two hundred nineteen thousand, five hundred twenty-four".