40298666742 has 96 divisors (see below), whose sum is σ = 91248374880. Its totient is φ = 12837726720.

The previous prime is 40298666731. The next prime is 40298666767. The reversal of 40298666742 is 24766689204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25650817 + ... + 25652387.

It is an arithmetic number, because the mean of its divisors is an integer number (950503905).

Almost surely, 2^40298666742 is an apocalyptic number.

40298666742 is the 163908-th pentagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40298666742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45624187440).

40298666742 is an abundant number, since it is smaller than the sum of its proper divisors (50949708138).

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

40298666742 is a wasteful number, since it uses less digits than its factorization.

40298666742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2078 (or 2075 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 54.

The spelling of 40298666742 in words is "forty billion, two hundred ninety-eight million, six hundred sixty-six thousand, seven hundred forty-two".