42124664 has 8 divisors (see below), whose sum is σ = 78983760. Its totient is φ = 21062328.

The previous prime is 42124651. The next prime is 42124669. The reversal of 42124664 is 46642124.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×42124664² = 3548974634225792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42124669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2632784 + ... + 2632799.

It is an arithmetic number, because the mean of its divisors is an integer number (9872970).

Almost surely, 2^42124664 is an apocalyptic number.

It is an amenable number.

42124664 is a deficient number, since it is larger than the sum of its proper divisors (36859096).

42124664 is a wasteful number, since it uses less digits than its factorization.

42124664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5265589 (or 5265585 counting only the distinct ones).

The product of its digits is 9216, while the sum is 29.

The square root of 42124664 is about 6490.3516083491. The cubic root of 42124664 is about 347.9462417510.

Adding to 42124664 its reverse (46642124), we get a palindrome (88766788).

The spelling of 42124664 in words is "forty-two million, one hundred twenty-four thousand, six hundred sixty-four".