40232120042420 has 36 divisors (see below), whose sum is σ = 88320531224100. Its totient is φ = 15393158968704.

The previous prime is 40232120042393. The next prime is 40232120042447. The reversal of 40232120042420 is 2424002123204.

It is an interprime number because it is at equal distance from previous prime (40232120042393) and next prime (40232120042447).

It can be written as a sum of positive squares in 2 ways, for example, as 13405293432976 + 26826826609444 = 3661324^2 + 5179462^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40232120042420.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1901318345 + ... + 1901339504.

Almost surely, 2^{40232120042420} is an apocalyptic number.

It is an amenable number.

40232120042420 is an abundant number, since it is smaller than the sum of its proper divisors (48088411181680).

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

40232120042420 is a wasteful number, since it uses less digits than its factorization.

40232120042420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3802657904 (or 3802657879 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 40232120042420 its reverse (2424002123204), we get a palindrome (42656122165624).

The spelling of 40232120042420 in words is "forty trillion, two hundred thirty-two billion, one hundred twenty million, forty-two thousand, four hundred twenty".