40013420 has 12 divisors (see below), whose sum is σ = 84028224. Its totient is φ = 16005360.

The previous prime is 40013419. The next prime is 40013423. The reversal of 40013420 is 2431004.

It is a junction number, because it is equal to n+sod(n) for n = 40013395 and 40013404.

It is not an unprimeable number, because it can be changed into a prime (40013423) 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, 1000316 + ... + 1000355.

It is an arithmetic number, because the mean of its divisors is an integer number (7002352).

Almost surely, 2^40013420 is an apocalyptic number.

It is an amenable number.

40013420 is an abundant number, since it is smaller than the sum of its proper divisors (44014804).

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

40013420 is a wasteful number, since it uses less digits than its factorization.

40013420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2000680 (or 2000678 counting only the distinct ones).

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

The square root of 40013420 is about 6325.6161755200. The cubic root of 40013420 is about 342.0334315209.

Adding to 40013420 its reverse (2431004), we get a palindrome (42444424).

The spelling of 40013420 in words is "forty million, thirteen thousand, four hundred twenty".