42018792 has 64 divisors (see below), whose sum is σ = 110522880. Its totient is φ = 13286592.

The previous prime is 42018763. The next prime is 42018803. The reversal of 42018792 is 29781024.

It is a happy number.

It is a super-2 number, since 2×42018792² = 3531157762278528, 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 15 ways as a sum of consecutive naturals, for example, 89743 + ... + 90209.

It is an arithmetic number, because the mean of its divisors is an integer number (1726920).

Almost surely, 2^42018792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42018792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55261440).

42018792 is an abundant number, since it is smaller than the sum of its proper divisors (68504088).

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

42018792 is a wasteful number, since it uses less digits than its factorization.

42018792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662 (or 658 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 42018792 is about 6482.1903705461. The cubic root of 42018792 is about 347.6544992132.

The spelling of 42018792 in words is "forty-two million, eighteen thousand, seven hundred ninety-two".