42249005 has 32 divisors (see below), whose sum is σ = 54895104. Its totient is φ = 31159296.

The previous prime is 42248993. The next prime is 42249017. The reversal of 42249005 is 50094224.

It is an interprime number because it is at equal distance from previous prime (42248993) and next prime (42249017).

It is a cyclic number.

It is not a de Polignac number, because 42249005 - 2⁸ = 42248749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 373829 + ... + 373941.

It is an arithmetic number, because the mean of its divisors is an integer number (1715472).

Almost surely, 2^42249005 is an apocalyptic number.

It is an amenable number.

42249005 is a deficient number, since it is larger than the sum of its proper divisors (12646099).

42249005 is a wasteful number, since it uses less digits than its factorization.

42249005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245.

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

The square root of 42249005 is about 6499.9234610878. The cubic root of 42249005 is about 348.2882542541.

The spelling of 42249005 in words is "forty-two million, two hundred forty-nine thousand, five".