40125020 has 96 divisors (see below), whose sum is σ = 96347328. Its totient is φ = 13934592.

The previous prime is 40124963. The next prime is 40125023. The reversal of 40125020 is 2052104.

It is a super-2 number, since 2×40125020² = 3220034460000800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40124986 and 40125004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40125023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 413612 + ... + 413708.

It is an arithmetic number, because the mean of its divisors is an integer number (1003618).

Almost surely, 2^40125020 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 40125020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48173664).

40125020 is an abundant number, since it is smaller than the sum of its proper divisors (56222308).

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

40125020 is a wasteful number, since it uses less digits than its factorization.

40125020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 197 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 40125020 is about 6334.4313083338. The cubic root of 40125020 is about 342.3511207594.

Adding to 40125020 its reverse (2052104), we get a palindrome (42177124).

The spelling of 40125020 in words is "forty million, one hundred twenty-five thousand, twenty".