42001249 has 8 divisors (see below), whose sum is σ = 43464960. Its totient is φ = 40544400.

The previous prime is 42001247. The next prime is 42001259. The reversal of 42001249 is 94210024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42001249 - 2¹ = 42001247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42001241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12822 + ... + 15760.

It is an arithmetic number, because the mean of its divisors is an integer number (5433120).

Almost surely, 2^42001249 is an apocalyptic number.

It is an amenable number.

42001249 is a deficient number, since it is larger than the sum of its proper divisors (1463711).

42001249 is a wasteful number, since it uses less digits than its factorization.

42001249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3431.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 42001249 is about 6480.8370601335. The cubic root of 42001249 is about 347.6061101349.

The spelling of 42001249 in words is "forty-two million, one thousand, two hundred forty-nine".