42930321 has 48 divisors (see below), whose sum is σ = 72394560. Its totient is φ = 22471680.

The previous prime is 42930311. The next prime is 42930331. The reversal of 42930321 is 12303924.

It is an interprime number because it is at equal distance from previous prime (42930311) and next prime (42930331).

It is not a de Polignac number, because 42930321 - 2¹⁰ = 42929297 is a prime.

It is a super-2 number, since 2×42930321² = 3686024922326082, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42930291 and 42930300.

It is not an unprimeable number, because it can be changed into a prime (42930301) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 102250 + ... + 102668.

It is an arithmetic number, because the mean of its divisors is an integer number (1508220).

Almost surely, 2^42930321 is an apocalyptic number.

42930321 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

42930321 is a deficient number, since it is larger than the sum of its proper divisors (29464239).

42930321 is a wasteful number, since it uses less digits than its factorization.

42930321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494 (or 487 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 42930321 is about 6552.1233962739. The cubic root of 42930321 is about 350.1504686360.

The spelling of 42930321 in words is "forty-two million, nine hundred thirty thousand, three hundred twenty-one".