42870481 has 8 divisors (see below), whose sum is σ = 46249704. Its totient is φ = 39586560.

The previous prime is 42870449. The next prime is 42870493. The reversal of 42870481 is 18407824.

It can be written as a sum of positive squares in 4 ways, for example, as 20930625 + 21939856 = 4575^2 + 4684^2 .

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 42870481 - 2⁵ = 42870449 is a prime.

It is a super-2 number, since 2×42870481² = 3675756282342722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42870181) 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, 22890 + ... + 24691.

It is an arithmetic number, because the mean of its divisors is an integer number (5781213).

Almost surely, 2^42870481 is an apocalyptic number.

It is an amenable number.

42870481 is a deficient number, since it is larger than the sum of its proper divisors (3379223).

42870481 is a wasteful number, since it uses less digits than its factorization.

42870481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47651.

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 42870481 is about 6547.5553453178. Note that the first 3 decimals coincide. The cubic root of 42870481 is about 349.9877029693.

The spelling of 42870481 in words is "forty-two million, eight hundred seventy thousand, four hundred eighty-one".