42409350 has 72 divisors (see below), whose sum is σ = 115590072. Its totient is φ = 11145600.

The previous prime is 42409337. The next prime is 42409357. The reversal of 42409350 is 5390424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42409357) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 32205 + ... + 33495.

Almost surely, 2^42409350 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42409350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57795036).

42409350 is an abundant number, since it is smaller than the sum of its proper divisors (73180722).

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

42409350 is a wasteful number, since it uses less digits than its factorization.

42409350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1382 (or 1374 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 42409350 is about 6512.2461562813. The cubic root of 42409350 is about 348.7283102093.

Adding to 42409350 its reverse (5390424), we get a palindrome (47799774).

The spelling of 42409350 in words is "forty-two million, four hundred nine thousand, three hundred fifty".