20265042 has 16 divisors (see below), whose sum is σ = 46320192. Its totient is φ = 5790000.

The previous prime is 20265017. The next prime is 20265059. The reversal of 20265042 is 24056202.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 7 ways as a sum of consecutive naturals, for example, 241209 + ... + 241292.

It is an arithmetic number, because the mean of its divisors is an integer number (2895012).

Almost surely, 2^20265042 is an apocalyptic number.

20265042 is an abundant number, since it is smaller than the sum of its proper divisors (26055150).

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

20265042 is a wasteful number, since it uses less digits than its factorization.

20265042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482513.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 20265042 is about 4501.6710230758. The cubic root of 20265042 is about 272.6355614259.

The spelling of 20265042 in words is "twenty million, two hundred sixty-five thousand, forty-two".