42020688 has 40 divisors (see below), whose sum is σ = 108890848. Its totient is φ = 13963392.

The previous prime is 42020687. The next prime is 42020729. The reversal of 42020688 is 88602024.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42020683) 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, 16731 + ... + 19077.

Almost surely, 2^42020688 is an apocalyptic number.

42020688 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

42020688 is an abundant number, since it is smaller than the sum of its proper divisors (66870160).

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

42020688 is a wasteful number, since it uses less digits than its factorization.

42020688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2731 (or 2725 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 42020688 is about 6482.3366157582. The cubic root of 42020688 is about 347.6597281674.

The spelling of 42020688 in words is "forty-two million, twenty thousand, six hundred eighty-eight".