20214442 has 16 divisors (see below), whose sum is σ = 32104800. Its totient is φ = 9519120.

The previous prime is 20214437. The next prime is 20214451. The reversal of 20214442 is 24441202.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5409 + ... + 8347.

It is an arithmetic number, because the mean of its divisors is an integer number (2006550).

Almost surely, 2^20214442 is an apocalyptic number.

20214442 is a deficient number, since it is larger than the sum of its proper divisors (11890358).

20214442 is a wasteful number, since it uses less digits than its factorization.

20214442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3141.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 20214442 is about 4496.0473751952. The cubic root of 20214442 is about 272.4084567516.

Adding to 20214442 its reverse (24441202), we get a palindrome (44655644).

The spelling of 20214442 in words is "twenty million, two hundred fourteen thousand, four hundred forty-two".