42921675 has 18 divisors (see below), whose sum is σ = 76877892. Its totient is φ = 22891440.

The previous prime is 42921643. The next prime is 42921677. The reversal of 42921675 is 57612924.

It is not a de Polignac number, because 42921675 - 2⁵ = 42921643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42921677) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 95157 + ... + 95606.

It is an arithmetic number, because the mean of its divisors is an integer number (4270994).

Almost surely, 2^42921675 is an apocalyptic number.

42921675 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42921675 is a deficient number, since it is larger than the sum of its proper divisors (33956217).

42921675 is a wasteful number, since it uses less digits than its factorization.

42921675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190779 (or 190771 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 42921675 is about 6551.4635769422. The cubic root of 42921675 is about 350.1269607428.

The spelling of 42921675 in words is "forty-two million, nine hundred twenty-one thousand, six hundred seventy-five".