42449131 has 8 divisors (see below), whose sum is σ = 44172864. Its totient is φ = 40759680.

The previous prime is 42449129. The next prime is 42449161. The reversal of 42449131 is 13194424.

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 42449131 - 2¹ = 42449129 is a prime.

It is a super-2 number, since 2×42449131² = 3603857445310322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42449131.

It is not an unprimeable number, because it can be changed into a prime (42449111) 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, 6030 + ... + 11011.

It is an arithmetic number, because the mean of its divisors is an integer number (5521608).

Almost surely, 2^42449131 is an apocalyptic number.

42449131 is a deficient number, since it is larger than the sum of its proper divisors (1723733).

42449131 is a wasteful number, since it uses less digits than its factorization.

42449131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17141.

The product of its digits is 3456, while the sum is 28.

The square root of 42449131 is about 6515.2997628659. The cubic root of 42449131 is about 348.8373146741.

The spelling of 42449131 in words is "forty-two million, four hundred forty-nine thousand, one hundred thirty-one".