20203442 has 8 divisors (see below), whose sum is σ = 34634496. Its totient is φ = 8658612.

The previous prime is 20203427. The next prime is 20203457. The reversal of 20203442 is 24430202.

It is an interprime number because it is at equal distance from previous prime (20203427) and next prime (20203457).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20203442.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 721538 + ... + 721565.

It is an arithmetic number, because the mean of its divisors is an integer number (4329312).

Almost surely, 2^20203442 is an apocalyptic number.

20203442 is a deficient number, since it is larger than the sum of its proper divisors (14431054).

20203442 is a wasteful number, since it uses less digits than its factorization.

20203442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1443112.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 20203442 is about 4494.8239120126. The cubic root of 20203442 is about 272.3590360335.

Adding to 20203442 its reverse (24430202), we get a palindrome (44633644).

The spelling of 20203442 in words is "twenty million, two hundred three thousand, four hundred forty-two".