20401123342 has 4 divisors (see below), whose sum is σ = 30601685016. Its totient is φ = 10200561670.

The previous prime is 20401123331. The next prime is 20401123373. The reversal of 20401123342 is 24332110402.

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, 5100280834 + ... + 5100280837.

It is an arithmetic number, because the mean of its divisors is an integer number (7650421254).

Almost surely, 2^20401123342 is an apocalyptic number.

20401123342 is a deficient number, since it is larger than the sum of its proper divisors (10200561674).

20401123342 is a wasteful number, since it uses less digits than its factorization.

20401123342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10200561673.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 20401123342 its reverse (24332110402), we get a palindrome (44733233744).

The spelling of 20401123342 in words is "twenty billion, four hundred one million, one hundred twenty-three thousand, three hundred forty-two".