452042009 has 2 divisors, whose sum is σ = 452042010. Its totient is φ = 452042008.

The previous prime is 452041999. The next prime is 452042051. The reversal of 452042009 is 900240254.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 388090000 + 63952009 = 19700^2 + 7997^2 .

It is a cyclic number.

It is not a de Polignac number, because 452042009 - 2⁸ = 452041753 is a prime.

It is not a weakly prime, because it can be changed into another prime (452042089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 226021004 + 226021005.

It is an arithmetic number, because the mean of its divisors is an integer number (226021005).

Almost surely, 2^452042009 is an apocalyptic number.

It is an amenable number.

452042009 is a deficient number, since it is larger than the sum of its proper divisors (1).

452042009 is an equidigital number, since it uses as much as digits as its factorization.

452042009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 452042009 is about 21261.2795710888. The cubic root of 452042009 is about 767.4668025974.

The spelling of 452042009 in words is "four hundred fifty-two million, forty-two thousand, nine".