42030421312440 has 256 divisors, whose sum is σ = 144080506183680. Its totient is φ = 9709125071360.

The previous prime is 42030421312423. The next prime is 42030421312459. The reversal of 42030421312440 is 4421312403024.

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 = 42030421312398 and 42030421312407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5352739 + ... + 10616621.

It is an arithmetic number, because the mean of its divisors is an integer number (562814477280).

Almost surely, 2^{42030421312440} is an apocalyptic number.

42030421312440 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 42030421312440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72040253091840).

42030421312440 is an abundant number, since it is smaller than the sum of its proper divisors (102050084871240).

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

42030421312440 is a wasteful number, since it uses less digits than its factorization.

42030421312440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5264194 (or 5264190 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 42030421312440 its reverse (4421312403024), we get a palindrome (46451733715464).

The spelling of 42030421312440 in words is "forty-two trillion, thirty billion, four hundred twenty-one million, three hundred twelve thousand, four hundred forty".