40542051420 has 192 divisors, whose sum is σ = 142982784000. Its totient is φ = 9454309632.

The previous prime is 40542051397. The next prime is 40542051463. The reversal of 40542051420 is 2415024504.

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

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 18600 + ... + 285359.

It is an arithmetic number, because the mean of its divisors is an integer number (744702000).

Almost surely, 2^40542051420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40542051420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71491392000).

40542051420 is an abundant number, since it is smaller than the sum of its proper divisors (102440732580).

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

40542051420 is a wasteful number, since it uses less digits than its factorization.

40542051420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304009 (or 304001 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 27.

Adding to 40542051420 its reverse (2415024504), we get a palindrome (42957075924).

The spelling of 40542051420 in words is "forty billion, five hundred forty-two million, fifty-one thousand, four hundred twenty".