42144307 has 2 divisors, whose sum is σ = 42144308. Its totient is φ = 42144306.

The previous prime is 42144301. The next prime is 42144331. The reversal of 42144307 is 70344124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42144307 - 2¹¹ = 42142259 is a prime.

It is a super-2 number, since 2×42144307² = 3552285225020498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42144301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21072153 + 21072154.

It is an arithmetic number, because the mean of its divisors is an integer number (21072154).

Almost surely, 2^42144307 is an apocalyptic number.

42144307 is a deficient number, since it is larger than the sum of its proper divisors (1).

42144307 is an equidigital number, since it uses as much as digits as its factorization.

42144307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 42144307 is about 6491.8646781953. The cubic root of 42144307 is about 348.0003165321. Note that the first 3 decimals are identical.

The spelling of 42144307 in words is "forty-two million, one hundred forty-four thousand, three hundred seven".