42820901 has 8 divisors (see below), whose sum is σ = 43835520. Its totient is φ = 41810688.

The previous prime is 42820891. The next prime is 42820903. The reversal of 42820901 is 10902824.

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 42820901 - 2¹⁸ = 42558757 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 (42820903) 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, 26330 + ... + 27908.

It is an arithmetic number, because the mean of its divisors is an integer number (5479440).

Almost surely, 2^42820901 is an apocalyptic number.

It is an amenable number.

42820901 is a deficient number, since it is larger than the sum of its proper divisors (1014619).

42820901 is a wasteful number, since it uses less digits than its factorization.

42820901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2203.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 42820901 is about 6543.7681040819. The cubic root of 42820901 is about 349.8527298783.

The spelling of 42820901 in words is "forty-two million, eight hundred twenty thousand, nine hundred one".