42101440 has 56 divisors (see below), whose sum is σ = 101041200. Its totient is φ = 16708608.

The previous prime is 42101419. The next prime is 42101467. The reversal of 42101440 is 4410124.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47239 + ... + 48121.

Almost surely, 2^42101440 is an apocalyptic number.

42101440 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 42101440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50520600).

42101440 is an abundant number, since it is smaller than the sum of its proper divisors (58939760).

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

42101440 is a wasteful number, since it uses less digits than its factorization.

42101440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049 (or 1039 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 42101440 is about 6488.5622444421. The cubic root of 42101440 is about 347.8822872233.

Adding to 42101440 its reverse (4410124), we get a palindrome (46511564).

The spelling of 42101440 in words is "forty-two million, one hundred one thousand, four hundred forty".