42684042 has 16 divisors (see below), whose sum is σ = 90389952. Its totient is φ = 13391040.

The previous prime is 42684029. The next prime is 42684043. The reversal of 42684042 is 24048624.

It is a super-3 number, since 3×42684042³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (42684043) 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, 209134 + ... + 209337.

It is an arithmetic number, because the mean of its divisors is an integer number (5649372).

Almost surely, 2^42684042 is an apocalyptic number.

42684042 is an abundant number, since it is smaller than the sum of its proper divisors (47705910).

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

42684042 is a wasteful number, since it uses less digits than its factorization.

42684042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418493.

The product of its (nonzero) digits is 12288, while the sum is 30.

The square root of 42684042 is about 6533.3025339410. The cubic root of 42684042 is about 349.4796130564.

The spelling of 42684042 in words is "forty-two million, six hundred eighty-four thousand, forty-two".