39243130 has 16 divisors (see below), whose sum is σ = 71796744. Its totient is φ = 15439680.

The previous prime is 39243107. The next prime is 39243137. The reversal of 39243130 is 3134293.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 32001649 + 7241481 = 5657^2 + 2691^2 .

It is a junction number, because it is equal to n+sod(n) for n = 39243095 and 39243104.

It is not an unprimeable number, because it can be changed into a prime (39243137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31557 + ... + 32776.

Almost surely, 2^39243130 is an apocalyptic number.

39243130 is a deficient number, since it is larger than the sum of its proper divisors (32553614).

39243130 is a wasteful number, since it uses less digits than its factorization.

39243130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64401.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 39243130 is about 6264.4337333872. The cubic root of 39243130 is about 339.8243902822.

The spelling of 39243130 in words is "thirty-nine million, two hundred forty-three thousand, one hundred thirty".