40254121051040 has 48 divisors (see below), whose sum is σ = 102415773371688. Its totient is φ = 14863060079616.

The previous prime is 40254121051037. The next prime is 40254121051049. The reversal of 40254121051040 is 4015012145204.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 34693372251664 + 5560748799376 = 5890108^2 + 2358124^2 .

It is a junction number, because it is equal to n+sod(n) for n = 40254121050994 and 40254121051012.

It is not an unprimeable number, because it can be changed into a prime (40254121051049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9676469327 + ... + 9676473486.

Almost surely, 2^{40254121051040} is an apocalyptic number.

40254121051040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40254121051040 is an abundant number, since it is smaller than the sum of its proper divisors (62161652320648).

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

40254121051040 is a wasteful number, since it uses less digits than its factorization.

40254121051040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19352942841 (or 19352942833 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

Adding to 40254121051040 its reverse (4015012145204), we get a palindrome (44269133196244).

The spelling of 40254121051040 in words is "forty trillion, two hundred fifty-four billion, one hundred twenty-one million, fifty-one thousand, forty".