42823901 has 8 divisors (see below), whose sum is σ = 45608184. Its totient is φ = 40069120.

The previous prime is 42823897. The next prime is 42823931. The reversal of 42823901 is 10932824.

It can be written as a sum of positive squares in 4 ways, for example, as 30580900 + 12243001 = 5530^2 + 3499^2 .

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 42823901 - 2² = 42823897 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 (42823931) 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, 4340 + ... + 10221.

It is an arithmetic number, because the mean of its divisors is an integer number (5701023).

Almost surely, 2^42823901 is an apocalyptic number.

It is an amenable number.

42823901 is a deficient number, since it is larger than the sum of its proper divisors (2784283).

42823901 is a wasteful number, since it uses less digits than its factorization.

42823901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14751.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 42823901 is about 6543.9973257941. The cubic root of 42823901 is about 349.8608998269.

The spelling of 42823901 in words is "forty-two million, eight hundred twenty-three thousand, nine hundred one".