40140562128 has 80 divisors (see below), whose sum is σ = 104975870400. Its totient is φ = 13215431680.

The previous prime is 40140562127. The next prime is 40140562151. The reversal of 40140562128 is 82126504104.

It is a happy number.

It is a super-2 number, since 2×40140562128² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40140562123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4348558 + ... + 4357778.

It is an arithmetic number, because the mean of its divisors is an integer number (1312198380).

Almost surely, 2^40140562128 is an apocalyptic number.

40140562128 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40140562128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52487935200).

40140562128 is an abundant number, since it is smaller than the sum of its proper divisors (64835308272).

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

40140562128 is a wasteful number, since it uses less digits than its factorization.

40140562128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10340 (or 10334 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The spelling of 40140562128 in words is "forty billion, one hundred forty million, five hundred sixty-two thousand, one hundred twenty-eight".