42124072 has 16 divisors (see below), whose sum is σ = 79090560. Its totient is φ = 21033264.

The previous prime is 42124057. The next prime is 42124073. The reversal of 42124072 is 27042124.

It is a happy number.

It is a super-2 number, since 2×42124072² = 3548874883722368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42124073) 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, 3433 + ... + 9799.

It is an arithmetic number, because the mean of its divisors is an integer number (4943160).

Almost surely, 2^42124072 is an apocalyptic number.

It is an amenable number.

42124072 is a deficient number, since it is larger than the sum of its proper divisors (36966488).

42124072 is a wasteful number, since it uses less digits than its factorization.

42124072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7200 (or 7196 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 42124072 is about 6490.3060020310. The cubic root of 42124072 is about 347.9446117864.

Adding to 42124072 its reverse (27042124), we get a palindrome (69166196).

The spelling of 42124072 in words is "forty-two million, one hundred twenty-four thousand, seventy-two".