20045342 has 32 divisors (see below), whose sum is σ = 33242400. Its totient is φ = 9030528.

The previous prime is 20045339. The next prime is 20045371. The reversal of 20045342 is 24354002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74384 + ... + 74652.

It is an arithmetic number, because the mean of its divisors is an integer number (1038825).

Almost surely, 2^20045342 is an apocalyptic number.

20045342 is a deficient number, since it is larger than the sum of its proper divisors (13197058).

20045342 is a wasteful number, since it uses less digits than its factorization.

20045342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 20045342 is about 4477.2024747603. The cubic root of 20045342 is about 271.6467353781.

Adding to 20045342 its reverse (24354002), we get a palindrome (44399344).

The spelling of 20045342 in words is "twenty million, forty-five thousand, three hundred forty-two".