42981043 has 16 divisors (see below), whose sum is σ = 51517440. Its totient is φ = 35060256.

The previous prime is 42981041. The next prime is 42981047. The reversal of 42981043 is 34018924.

It is not a de Polignac number, because 42981043 - 2¹ = 42981041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42980996 and 42981014.

It is not an unprimeable number, because it can be changed into a prime (42981041) 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, 37921 + ... + 39037.

It is an arithmetic number, because the mean of its divisors is an integer number (3219840).

Almost surely, 2^42981043 is an apocalyptic number.

42981043 is a deficient number, since it is larger than the sum of its proper divisors (8536397).

42981043 is a wasteful number, since it uses less digits than its factorization.

42981043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1386.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 42981043 is about 6555.9929072567. The cubic root of 42981043 is about 350.2883148145.

Adding to 42981043 its reverse (34018924), we get a palindrome (76999967).

The spelling of 42981043 in words is "forty-two million, nine hundred eighty-one thousand, forty-three".