307204042 has 16 divisors (see below), whose sum is σ = 488409480. Its totient is φ = 144419328.

The previous prime is 307204033. The next prime is 307204043. The reversal of 307204042 is 240402703.

It can be written as a sum of positive squares in 4 ways, for example, as 127938721 + 179265321 = 11311^2 + 13389^2 .

It is a super-2 number, since 2×307204042² = 188748646842275528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (307204043) 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, 33934 + ... + 42022.

Almost surely, 2^307204042 is an apocalyptic number.

307204042 is a deficient number, since it is larger than the sum of its proper divisors (181205438).

307204042 is a wasteful number, since it uses less digits than its factorization.

307204042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9225.

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

The square root of 307204042 is about 17527.2371467953. The cubic root of 307204042 is about 674.7490915642.

Adding to 307204042 its reverse (240402703), we get a palindrome (547606745).

The spelling of 307204042 in words is "three hundred seven million, two hundred four thousand, forty-two".