40785023 has 4 divisors (see below), whose sum is σ = 43184160. Its totient is φ = 38385888.

The previous prime is 40784993. The next prime is 40785029. The reversal of 40785023 is 32058704.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 40785023 - 2⁶ = 40784959 is a prime.

It is a super-2 number, since 2×40785023² = 3326836202221058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40785029) 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, 1199543 + ... + 1199576.

It is an arithmetic number, because the mean of its divisors is an integer number (10796040).

Almost surely, 2^40785023 is an apocalyptic number.

40785023 is a deficient number, since it is larger than the sum of its proper divisors (2399137).

40785023 is a wasteful number, since it uses less digits than its factorization.

40785023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2399136.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 40785023 is about 6386.3152913084. The cubic root of 40785023 is about 344.2179949386.

The spelling of 40785023 in words is "forty million, seven hundred eighty-five thousand, twenty-three".