42293424 has 80 divisors (see below), whose sum is σ = 115579904. Its totient is φ = 13305600.

The previous prime is 42293387. The next prime is 42293429. The reversal of 42293424 is 42439224.

42293424 = 1153² + 1154² + ... + 1183².

It is a junction number, because it is equal to n+sod(n) for n = 42293391 and 42293400.

It is not an unprimeable number, because it can be changed into a prime (42293429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63654 + ... + 64314.

Almost surely, 2^42293424 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 42293424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57789952).

42293424 is an abundant number, since it is smaller than the sum of its proper divisors (73286480).

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

42293424 is a wasteful number, since it uses less digits than its factorization.

42293424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746 (or 740 counting only the distinct ones).

The product of its digits is 13824, while the sum is 30.

The square root of 42293424 is about 6503.3394498519. The cubic root of 42293424 is about 348.4102705192.

The spelling of 42293424 in words is "forty-two million, two hundred ninety-three thousand, four hundred twenty-four".