40521710906742 has 24 divisors (see below), whose sum is σ = 87757078060584. Its totient is φ = 12468218740224.

The previous prime is 40521710906741. The next prime is 40521710906771. The reversal of 40521710906742 is 24760901712504.

It is a junction number, because it is equal to n+sod(n) for n = 40521710906691 and 40521710906700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40521710906741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19981118763 + ... + 19981120790.

It is an arithmetic number, because the mean of its divisors is an integer number (3656544919191).

Almost surely, 2^{40521710906742} is an apocalyptic number.

40521710906742 is an abundant number, since it is smaller than the sum of its proper divisors (47235367153842).

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

40521710906742 is a wasteful number, since it uses less digits than its factorization.

40521710906742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39962239584 (or 39962239571 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 48.

The spelling of 40521710906742 in words is "forty trillion, five hundred twenty-one billion, seven hundred ten million, nine hundred six thousand, seven hundred forty-two".