40450510542 has 64 divisors (see below), whose sum is σ = 87808702464. Its totient is φ = 12348806400.

The previous prime is 40450510501. The next prime is 40450510547. The reversal of 40450510542 is 24501505404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40450510547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7826043 + ... + 7831209.

It is an arithmetic number, because the mean of its divisors is an integer number (1372010976).

Almost surely, 2^40450510542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40450510542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43904351232).

40450510542 is an abundant number, since it is smaller than the sum of its proper divisors (47358191922).

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

40450510542 is a wasteful number, since it uses less digits than its factorization.

40450510542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5953.

The product of its (nonzero) digits is 16000, while the sum is 30.

The spelling of 40450510542 in words is "forty billion, four hundred fifty million, five hundred ten thousand, five hundred forty-two".