4021242 has 16 divisors (see below), whose sum is σ = 8175072. Its totient is φ = 1318320.

The previous prime is 4021229. The next prime is 4021243. The reversal of 4021242 is 2421204.

It is a nialpdrome in base 13.

It is a zygodrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (4021243) 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, 5128 + ... + 5859.

It is an arithmetic number, because the mean of its divisors is an integer number (510942).

Almost surely, 2^4021242 is an apocalyptic number.

4021242 is an abundant number, since it is smaller than the sum of its proper divisors (4153830).

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

4021242 is a wasteful number, since it uses less digits than its factorization.

4021242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11053.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 4021242 is about 2005.3034683060. The cubic root of 4021242 is about 159.0206056915.

Adding to 4021242 its reverse (2421204), we get a palindrome (6442446).

The spelling of 4021242 in words is "four million, twenty-one thousand, two hundred forty-two".