42686830 has 16 divisors (see below), whose sum is σ = 81356400. Its totient is φ = 16070272.

The previous prime is 42686821. The next prime is 42686837. The reversal of 42686830 is 3868624.

It is a super-3 number, since 3×42686830³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42686830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42686837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125380 + ... + 125719.

It is an arithmetic number, because the mean of its divisors is an integer number (5084775).

Almost surely, 2^42686830 is an apocalyptic number.

42686830 is a deficient number, since it is larger than the sum of its proper divisors (38669570).

42686830 is a wasteful number, since it uses less digits than its factorization.

42686830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251123.

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 42686830 is about 6533.5158988098. The cubic root of 42686830 is about 349.4872218949.

The spelling of 42686830 in words is "forty-two million, six hundred eighty-six thousand, eight hundred thirty".