42103971 has 48 divisors (see below), whose sum is σ = 75741120. Its totient is φ = 21945600.

The previous prime is 42103949. The next prime is 42103979. The reversal of 42103971 is 17930124.

It is not a de Polignac number, because 42103971 - 2⁶ = 42103907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42103979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 82465 + ... + 82973.

It is an arithmetic number, because the mean of its divisors is an integer number (1577940).

Almost surely, 2^42103971 is an apocalyptic number.

42103971 is a deficient number, since it is larger than the sum of its proper divisors (33637149).

42103971 is a wasteful number, since it uses less digits than its factorization.

42103971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636 (or 633 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 42103971 is about 6488.7572770138. The cubic root of 42103971 is about 347.8892582629.

The spelling of 42103971 in words is "forty-two million, one hundred three thousand, nine hundred seventy-one".