42520146 has 16 divisors (see below), whose sum is σ = 88737984. Its totient is φ = 13557104.

The previous prime is 42520139. The next prime is 42520183. The reversal of 42520146 is 64102524.

It is a super-2 number, since 2×42520146² = 3615925631722632, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153921 + ... + 154196.

It is an arithmetic number, because the mean of its divisors is an integer number (5546124).

Almost surely, 2^42520146 is an apocalyptic number.

42520146 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

42520146 is an abundant number, since it is smaller than the sum of its proper divisors (46217838).

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

42520146 is a wasteful number, since it uses less digits than its factorization.

42520146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308145.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 42520146 is about 6520.7473498058. The cubic root of 42520146 is about 349.0317346753.

The spelling of 42520146 in words is "forty-two million, five hundred twenty thousand, one hundred forty-six".