40423100 has 72 divisors (see below), whose sum is σ = 92806560. Its totient is φ = 15258880.

The previous prime is 40423099. The next prime is 40423109. The reversal of 40423100 is 132404.

It is a super-2 number, since 2×40423100² = 3268054027220000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40423109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 153569 + ... + 153831.

It is an arithmetic number, because the mean of its divisors is an integer number (1288980).

Almost surely, 2^40423100 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40423100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46403280).

40423100 is an abundant number, since it is smaller than the sum of its proper divisors (52383460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40423100 is a wasteful number, since it uses less digits than its factorization.

40423100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359 (or 352 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 40423100 is about 6357.9163253380. The cubic root of 40423100 is about 343.1967806690.

Adding to 40423100 its reverse (132404), we get a palindrome (40555504).

The spelling of 40423100 in words is "forty million, four hundred twenty-three thousand, one hundred".