20212442342 has 4 divisors (see below), whose sum is σ = 30318663516. Its totient is φ = 10106221170.

The previous prime is 20212442333. The next prime is 20212442407. The reversal of 20212442342 is 24324421202.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5053110584 + ... + 5053110587.

It is an arithmetic number, because the mean of its divisors is an integer number (7579665879).

Almost surely, 2^20212442342 is an apocalyptic number.

20212442342 is a deficient number, since it is larger than the sum of its proper divisors (10106221174).

20212442342 is a wasteful number, since it uses less digits than its factorization.

20212442342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10106221173.

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 20212442342 its reverse (24324421202), we get a palindrome (44536863544).

The spelling of 20212442342 in words is "twenty billion, two hundred twelve million, four hundred forty-two thousand, three hundred forty-two".