40642023 has 8 divisors (see below), whose sum is σ = 55937536. Its totient is φ = 26220600.

The previous prime is 40642003. The next prime is 40642037. The reversal of 40642023 is 32024604.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40642023 - 2⁶ = 40641959 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 (40642003) 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, 218413 + ... + 218598.

It is an arithmetic number, because the mean of its divisors is an integer number (6992192).

Almost surely, 2^40642023 is an apocalyptic number.

40642023 is a deficient number, since it is larger than the sum of its proper divisors (15295513).

40642023 is a wasteful number, since it uses less digits than its factorization.

40642023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437045.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 40642023 is about 6375.1096461159. The cubic root of 40642023 is about 343.8152260579.

Adding to 40642023 its reverse (32024604), we get a palindrome (72666627).

The spelling of 40642023 in words is "forty million, six hundred forty-two thousand, twenty-three".