40122528240 has 160 divisors (see below), whose sum is σ = 132506447616. Its totient is φ = 10008023040.

The previous prime is 40122528239. The next prime is 40122528241. The reversal of 40122528240 is 4282522104.

It is an interprime number because it is at equal distance from previous prime (40122528239) and next prime (40122528241).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 40122528198 and 40122528207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40122528241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 634875 + ... + 695205.

Almost surely, 2^40122528240 is an apocalyptic number.

40122528240 is a gapful number since it is divisible by the number (40) 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 40122528240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66253223808).

40122528240 is an abundant number, since it is smaller than the sum of its proper divisors (92383919376).

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

40122528240 is a wasteful number, since it uses less digits than its factorization.

40122528240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60527 (or 60521 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 30.

The spelling of 40122528240 in words is "forty billion, one hundred twenty-two million, five hundred twenty-eight thousand, two hundred forty".