42511830 has 32 divisors (see below), whose sum is σ = 103957344. Its totient is φ = 11122176.

The previous prime is 42511823. The next prime is 42511837. The reversal of 42511830 is 3811524.

42511830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (42511823) and next prime (42511837).

It is a self number, because there is not a number n which added to its sum of digits gives 42511830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42511837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11779 + ... + 14958.

It is an arithmetic number, because the mean of its divisors is an integer number (3248667).

Almost surely, 2^42511830 is an apocalyptic number.

42511830 is an abundant number, since it is smaller than the sum of its proper divisors (61445514).

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

42511830 is a wasteful number, since it uses less digits than its factorization.

42511830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26800.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 42511830 is about 6520.1096616545. The cubic root of 42511830 is about 349.0089788961.

The spelling of 42511830 in words is "forty-two million, five hundred eleven thousand, eight hundred thirty".