42427392 has 88 divisors (see below), whose sum is σ = 129304896. Its totient is φ = 12115968.

The previous prime is 42427351. The next prime is 42427409. The reversal of 42427392 is 29372424.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20518 + ... + 22490.

Almost surely, 2^42427392 is an apocalyptic number.

42427392 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42427392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64652448).

42427392 is an abundant number, since it is smaller than the sum of its proper divisors (86877504).

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

42427392 is a wasteful number, since it uses less digits than its factorization.

42427392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2003 (or 1985 counting only the distinct ones).

The product of its digits is 24192, while the sum is 33.

The square root of 42427392 is about 6513.6312453193. The cubic root of 42427392 is about 348.7777557848. Note that the first 4 decimals are identical.

The spelling of 42427392 in words is "forty-two million, four hundred twenty-seven thousand, three hundred ninety-two".