42002345 has 16 divisors (see below), whose sum is σ = 62840448. Its totient is φ = 26183040.

The previous prime is 42002339. The next prime is 42002351. The reversal of 42002345 is 54320024.

It is an interprime number because it is at equal distance from previous prime (42002339) and next prime (42002351).

It is not a de Polignac number, because 42002345 - 2²⁴ = 25225129 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54164 + ... + 54933.

It is an arithmetic number, because the mean of its divisors is an integer number (3927528).

Almost surely, 2^42002345 is an apocalyptic number.

It is an amenable number.

42002345 is a deficient number, since it is larger than the sum of its proper divisors (20838103).

42002345 is a wasteful number, since it uses less digits than its factorization.

42002345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109120.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 42002345 is about 6480.9216165604. The cubic root of 42002345 is about 347.6091336401.

Adding to 42002345 its reverse (54320024), we get a palindrome (96322369).

The spelling of 42002345 in words is "forty-two million, two thousand, three hundred forty-five".