42224392 has 32 divisors (see below), whose sum is σ = 90849600. Its totient is φ = 18022464.

The previous prime is 42224333. The next prime is 42224393. The reversal of 42224392 is 29342224.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 42224392.

It is not an unprimeable number, because it can be changed into a prime (42224393) 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, 13663 + ... + 16465.

It is an arithmetic number, because the mean of its divisors is an integer number (2839050).

Almost surely, 2^42224392 is an apocalyptic number.

It is an amenable number.

42224392 is an abundant number, since it is smaller than the sum of its proper divisors (48625208).

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

42224392 is a wasteful number, since it uses less digits than its factorization.

42224392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3085 (or 3081 counting only the distinct ones).

The product of its digits is 6912, while the sum is 28.

The square root of 42224392 is about 6498.0298552715. The cubic root of 42224392 is about 348.2206070277.

The spelling of 42224392 in words is "forty-two million, two hundred twenty-four thousand, three hundred ninety-two".