40401102042 has 192 divisors, whose sum is σ = 106316361216. Its totient is φ = 10839121920.

The previous prime is 40401102031. The next prime is 40401102043. The reversal of 40401102042 is 24020110404.

40401102042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (40401102043) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 74678292 + ... + 74678832.

It is an arithmetic number, because the mean of its divisors is an integer number (553731048).

Almost surely, 2^40401102042 is an apocalyptic number.

40401102042 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 40401102042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53158180608).

40401102042 is an abundant number, since it is smaller than the sum of its proper divisors (65915259174).

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

40401102042 is a wasteful number, since it uses less digits than its factorization.

40401102042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005 (or 1002 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 40401102042 its reverse (24020110404), we get a palindrome (64421212446).

The spelling of 40401102042 in words is "forty billion, four hundred one million, one hundred two thousand, forty-two".