10040420 has 72 divisors (see below), whose sum is σ = 24062136. Its totient is φ = 3497472.

The previous prime is 10040413. The next prime is 10040447. The reversal of 10040420 is 2404001.

It can be written as a sum of positive squares in 4 ways, for example, as 256036 + 9784384 = 506^2 + 3128^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 137504 + ... + 137576.

Almost surely, 2^10040420 is an apocalyptic number.

10040420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10040420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12031068).

10040420 is an abundant number, since it is smaller than the sum of its proper divisors (14021716).

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

10040420 is a wasteful number, since it uses less digits than its factorization.

10040420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 10040420 is about 3168.6621782702. The cubic root of 10040420 is about 215.7333529502.

Adding to 10040420 its reverse (2404001), we get a palindrome (12444421).

The spelling of 10040420 in words is "ten million, forty thousand, four hundred twenty".