40423534 has 4 divisors (see below), whose sum is σ = 60635304. Its totient is φ = 20211766.

The previous prime is 40423529. The next prime is 40423543. The reversal of 40423534 is 43532404.

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

It is a junction number, because it is equal to n+sod(n) for n = 40423499 and 40423508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105882 + ... + 10105885.

It is an arithmetic number, because the mean of its divisors is an integer number (15158826).

Almost surely, 2^40423534 is an apocalyptic number.

40423534 is a deficient number, since it is larger than the sum of its proper divisors (20211770).

40423534 is a wasteful number, since it uses less digits than its factorization.

40423534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20211769.

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 40423534 is about 6357.9504559252. The cubic root of 40423534 is about 343.1980089013.

Adding to 40423534 its reverse (43532404), we get a palindrome (83955938).

The spelling of 40423534 in words is "forty million, four hundred twenty-three thousand, five hundred thirty-four".