40023123 has 8 divisors (see below), whose sum is σ = 60987648. Its totient is φ = 22870344.

The previous prime is 40023119. The next prime is 40023127. The reversal of 40023123 is 32132004.

It is an interprime number because it is at equal distance from previous prime (40023119) and next prime (40023127).

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

It is not a de Polignac number, because 40023123 - 2² = 40023119 is a prime.

It is a super-3 number, since 3×40023123³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (40023127) 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, 952911 + ... + 952952.

It is an arithmetic number, because the mean of its divisors is an integer number (7623456).

Almost surely, 2^40023123 is an apocalyptic number.

40023123 is a deficient number, since it is larger than the sum of its proper divisors (20964525).

40023123 is a wasteful number, since it uses less digits than its factorization.

40023123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1905873.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 40023123 is about 6326.3830898864. The cubic root of 40023123 is about 342.0610762641.

Adding to 40023123 its reverse (32132004), we get a palindrome (72155127).

The spelling of 40023123 in words is "forty million, twenty-three thousand, one hundred twenty-three".