42450520 has 32 divisors (see below), whose sum is σ = 109159200. Its totient is φ = 14554368.

The previous prime is 42450517. The next prime is 42450533. The reversal of 42450520 is 2505424.

It is a junction number, because it is equal to n+sod(n) for n = 42450491 and 42450500.

It is a congruent number.

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, 75525 + ... + 76084.

It is an arithmetic number, because the mean of its divisors is an integer number (3411225).

Almost surely, 2^42450520 is an apocalyptic number.

42450520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42450520 is an abundant number, since it is smaller than the sum of its proper divisors (66708680).

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

42450520 is a wasteful number, since it uses less digits than its factorization.

42450520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151627 (or 151623 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 42450520 is about 6515.4063572428. The cubic root of 42450520 is about 348.8411194614.

Adding to 42450520 its reverse (2505424), we get a palindrome (44955944).

The spelling of 42450520 in words is "forty-two million, four hundred fifty thousand, five hundred twenty".