42453009 has 24 divisors (see below), whose sum is σ = 64963392. Its totient is φ = 26658720.

The previous prime is 42453001. The next prime is 42453017. The reversal of 42453009 is 90035424.

It is an interprime number because it is at equal distance from previous prime (42453001) and next prime (42453017).

It is not a de Polignac number, because 42453009 - 2³ = 42453001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42453001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12339 + ... + 15399.

It is an arithmetic number, because the mean of its divisors is an integer number (2706808).

Almost surely, 2^42453009 is an apocalyptic number.

It is an amenable number.

42453009 is a deficient number, since it is larger than the sum of its proper divisors (22510383).

42453009 is a wasteful number, since it uses less digits than its factorization.

42453009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3157 (or 3154 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 42453009 is about 6515.5973632507. The cubic root of 42453009 is about 348.8479371916.

The spelling of 42453009 in words is "forty-two million, four hundred fifty-three thousand, nine".