42050340 has 120 divisors (see below), whose sum is σ = 133737912. Its totient is φ = 11059200.

The previous prime is 42050317. The next prime is 42050381. The reversal of 42050340 is 4305024.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 27625536 + 14424804 = 5256^2 + 3798^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 163492 + ... + 163748.

Almost surely, 2^42050340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42050340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66868956).

42050340 is an abundant number, since it is smaller than the sum of its proper divisors (91687572).

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

42050340 is a wasteful number, since it uses less digits than its factorization.

42050340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379 (or 368 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 42050340 is about 6484.6233506658. The cubic root of 42050340 is about 347.7414845822.

Adding to 42050340 its reverse (4305024), we get a palindrome (46355364).

The spelling of 42050340 in words is "forty-two million, fifty thousand, three hundred forty".