42820613 has 8 divisors (see below), whose sum is σ = 47277216. Its totient is φ = 38458000.

The previous prime is 42820573. The next prime is 42820627. The reversal of 42820613 is 31602824.

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 42820613 - 2¹² = 42816517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42820633) 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, 22538 + ... + 24363.

It is an arithmetic number, because the mean of its divisors is an integer number (5909652).

Almost surely, 2^42820613 is an apocalyptic number.

It is an amenable number.

42820613 is a deficient number, since it is larger than the sum of its proper divisors (4456603).

42820613 is a wasteful number, since it uses less digits than its factorization.

42820613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46995.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 42820613 is about 6543.7460983752. The cubic root of 42820613 is about 349.8519455432.

The spelling of 42820613 in words is "forty-two million, eight hundred twenty thousand, six hundred thirteen".