42521350 has 12 divisors (see below), whose sum is σ = 79089804. Its totient is φ = 17008520.

The previous prime is 42521341. The next prime is 42521357. The reversal of 42521350 is 5312524.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42521357) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 425164 + ... + 425263.

It is an arithmetic number, because the mean of its divisors is an integer number (6590817).

Almost surely, 2^42521350 is an apocalyptic number.

42521350 is a deficient number, since it is larger than the sum of its proper divisors (36568454).

42521350 is a wasteful number, since it uses less digits than its factorization.

42521350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850439 (or 850434 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 42521350 is about 6520.8396698585. The cubic root of 42521350 is about 349.0350290371.

Adding to 42521350 its reverse (5312524), we get a palindrome (47833874).

The spelling of 42521350 in words is "forty-two million, five hundred twenty-one thousand, three hundred fifty".