40061020 has 12 divisors (see below), whose sum is σ = 84128184. Its totient is φ = 16024400.

The previous prime is 40061017. The next prime is 40061023. The reversal of 40061020 is 2016004.

It is an interprime number because it is at equal distance from previous prime (40061017) and next prime (40061023).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40061023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1001506 + ... + 1001545.

It is an arithmetic number, because the mean of its divisors is an integer number (7010682).

Almost surely, 2^40061020 is an apocalyptic number.

It is an amenable number.

40061020 is an abundant number, since it is smaller than the sum of its proper divisors (44067164).

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

40061020 is a wasteful number, since it uses less digits than its factorization.

40061020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2003060 (or 2003058 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 40061020 is about 6329.3775365355. The cubic root of 40061020 is about 342.1690055335.

Adding to 40061020 its reverse (2016004), we get a palindrome (42077024).

The spelling of 40061020 in words is "forty million, sixty-one thousand, twenty".