40122020142405 has 80 divisors (see below), whose sum is σ = 74780202190320. Its totient is φ = 20555657515008.

The previous prime is 40122020142353. The next prime is 40122020142409. The reversal of 40122020142405 is 50424102022104.

It is a happy number.

40122020142405 is a `hidden beast` number, since 4 + 0 + 1 + 220 + 20 + 14 + 2 + 405 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 14520535178724 + 25601484963681 = 3810582^2 + 5059791^2 .

It is not a de Polignac number, because 40122020142405 - 2²⁰ = 40122019093829 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40122020142409) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 6356524 + ... + 10984053.

It is an arithmetic number, because the mean of its divisors is an integer number (934752527379).

Almost surely, 2^{40122020142405} is an apocalyptic number.

40122020142405 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40122020142405 is a deficient number, since it is larger than the sum of its proper divisors (34658182047915).

40122020142405 is a wasteful number, since it uses less digits than its factorization.

40122020142405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17340820 (or 17340811 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

Adding to 40122020142405 its reverse (50424102022104), we get a palindrome (90546122164509).

The spelling of 40122020142405 in words is "forty trillion, one hundred twenty-two billion, twenty million, one hundred forty-two thousand, four hundred five".