42881449 has 16 divisors (see below), whose sum is σ = 48432384. Its totient is φ = 37699200.

The previous prime is 42881413. The next prime is 42881467. The reversal of 42881449 is 94418824.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 42881449 - 2¹⁵ = 42848681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42881479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21984 + ... + 23854.

It is an arithmetic number, because the mean of its divisors is an integer number (3027024).

Almost surely, 2^42881449 is an apocalyptic number.

It is an amenable number.

42881449 is a deficient number, since it is larger than the sum of its proper divisors (5550935).

42881449 is a wasteful number, since it uses less digits than its factorization.

42881449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1968.

The product of its digits is 73728, while the sum is 40.

The square root of 42881449 is about 6548.3928562663. The cubic root of 42881449 is about 350.0175474196.

The spelling of 42881449 in words is "forty-two million, eight hundred eighty-one thousand, four hundred forty-nine".