42823037 has 4 divisors (see below), whose sum is σ = 43525116. Its totient is φ = 42120960.

The previous prime is 42823019. The next prime is 42823043. The reversal of 42823037 is 73032824.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2042041 + 40780996 = 1429^2 + 6386^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42823037 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 (42823007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 350948 + ... + 351069.

It is an arithmetic number, because the mean of its divisors is an integer number (10881279).

Almost surely, 2^42823037 is an apocalyptic number.

It is an amenable number.

42823037 is a deficient number, since it is larger than the sum of its proper divisors (702079).

42823037 is an equidigital number, since it uses as much as digits as its factorization.

42823037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702078.

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 42823037 is about 6543.9313107642. The cubic root of 42823037 is about 349.8585469208.

The spelling of 42823037 in words is "forty-two million, eight hundred twenty-three thousand, thirty-seven".