42030724 has 6 divisors (see below), whose sum is σ = 73553774. Its totient is φ = 21015360.

The previous prime is 42030707. The next prime is 42030743. The reversal of 42030724 is 42703024.

It can be written as a sum of positive squares in only one way, i.e., 42016324 + 14400 = 6482^2 + 120^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42030695 and 42030704.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5253837 + ... + 5253844.

Almost surely, 2^42030724 is an apocalyptic number.

It is an amenable number.

42030724 is a deficient number, since it is larger than the sum of its proper divisors (31523050).

42030724 is a wasteful number, since it uses less digits than its factorization.

42030724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10507685 (or 10507683 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 42030724 is about 6483.1106731260. The cubic root of 42030724 is about 347.6874037042.

Adding to 42030724 its reverse (42703024), we get a palindrome (84733748).

The spelling of 42030724 in words is "forty-two million, thirty thousand, seven hundred twenty-four".